A mannichbase is a beta amine amino ketone , which is formed in the reaction of an amine , formaldehyde or an aldehyde and a carbon acid ref JerryMarch ref . The Mannichbase is an endproduct in the Mannich reaction , which is nucleophilic addition reaction of a enol non enolizable aldehyde and any primary or secondary amine to produce resonance stabilized imine iminium ion or imine salt . The addition of a carbanion from a CH acidic compound any enolizable carbonyl compound, amide, carbamate, hydantoin or urea to the imine gives the Mannichbase. ref Mannichbase applied in this example cite journal author V. J. Belinelo, G. T. Reis, G. M. Stefani, D. L. Ferreira Alves and D. Pil Veloso title Synthesis of 6a,7b dihydroxyvouacapan 17b oic acid derivatives. Part IV mannichbase derivatives and its activities on the electrically stimulated Guinea pig ileum preparation year 2002 journal Journal of the Brazilian Chemical Society volume 13 issue 6 pages 830 837 url http www.scielo.br scielo.php?script sci arttext&pid S0103 50532002000600016&nrm iso format Open access publishing open access doi 10.1590 S0103 50532002000600016 ref Image MannichBase forrmation base catalysed.svg Base catalysed Mannich reaction forming Mannichbase Reactivity With primary or secondary amines, Mannich bases react with additional aldehyde and carbon acid to larger adducts HN CH sub 2 sub CH sub 2 sub COR sub 2 sub and HN CH sub 2 sub CH sub 2 sub COR sub 2 sub . With multiple acidic hydrogen atoms on the carbon acid higher adducts are also possible. Ammonia can be split off in an elimination reaction to form enal s and enone s. References Reflist Category Amines Category Ketones de MannichBase mk ... more details
amine . The final product is a amino carbonyl compound also known as a Mannichbase . ref Original ... Mannichbase of tetracycline , fluoxetine antidepressant , tramadol , and tolmetin anti inflammatory ...The Mannich reaction is an organic reaction which consists of an amino alkylation of an acidic proton ... Mannich reactions because these imines form between amines and aldehydes. The reaction is named after chemist Carl Mannich . ref Cite doi 10.1002 ardp.19122500151 ref ref Blicke, F. F. Organic Reactions Org. React. 1942 , 1 . ref image Mannich Reaction V.1.png center 500px Scheme 1. Ammonia ... carbonyl compound The Mannich reaction is an example of nucleophilic addition of an amine to a carbonyl group followed by dehydration to the Schiff base . The Schiff base is an electrophile which ... is, or had become an enol . The Mannich reaction is also considered a condensation reaction . In the Mannich ... provides gramine derivatives. Reaction mechanism The mechanism of the Mannich reaction starts ... center 436px image Mannichreactionmech3.svg center 650px Asymmetric Mannich reactions Progress has been made towards chiral synthesis asymmetric Mannich reactions. When properly functionalized the newly formed ethylene bridge in the Mannich adduct has two prochiral centers giving rise to two diastereomeric pairs of enantiomers. The first asymmetric Mannich reaction with an unmodified ... catalyst . ref Cite doi 10.1021 ja017833p ref Image Asymmetric mannich overview.png center 500px Scheme 4. Asymmetric Mannich reactions ref. Cordova 2002 The reaction taking place is between a simple ... product is Diastereoselectivity diastereoselective with a preference for the syn Mannich ... syn Mannich reactions ref. Cordova 2002 Proline enters a catalytic cycle by reacting with the aldehyde to form an enamine . The two reactants imine and enamine line up for the Mannich reaction ... of the proline catalyst to it is also possible to obtain anti Mannich adducts. ref Cite doi 10.1021 ... more details
Infobox scientist name Carl Mannich image image size caption Photograph of Richard August Carl Emil Erlenmeyer birth date March 8, 1877 birth place Breslau , Germany death date death date and age 1947 3 5 1877 3 8 death place Karlsruhe , Germany residence Germany nationality German ethnicity field Pharmaceutical chemistry , br Organic chemistry work institutions University of Berlin alma mater doctoral advisor doctoral students known for Mannich reaction author abbrev bot author abbrev zoo prizes religion footnotes Carl Ulrich Franz Mannich March 8, 1877 in Breslau , March 5, 1947 in Karlsruhe was a German Chemist . From 1927 to 1943 he was Professor for pharmaceutical chemistry at the University of Berlin . His areas of expertise were Keto bases, Alcohol bases, Piperidine Derivative s, Papaverine , Lactone and also Digitalis Glycoside . The Mannich reaction was named after his discovery of the mechanism in 1912. ref cite journal author Mannich, C. Krosche, W. title Ueber ein Kondensationsprodukt aus Formaldehyd, Ammoniak und Antipyrin journal Archiv der Pharmazie year 1912 volume 250 pages 647 667 doi 10.1002 ardp.19122500151 ref References Reflist Translated from German Wiki original Persondata Metadata see Wikipedia Persondata . NAME Mannich, Carl ALTERNATIVE NAMES SHORT DESCRIPTION DATE OF BIRTH March 8, 1877 PLACE OF BIRTH Breslau , Germany DATE OF DEATH March 5, 1947 PLACE OF DEATH Karlsruhe , Germany DEFAULTSORT Mannich, Carl Category 1877 births Category 1947 deaths Category People from Wroc aw Category People from the Province of Silesia Category Humboldt University of Berlin faculty Category German chemists Germany chemist stub de Carl Mannich pl Carl Mannich pt Carl Mannich sq Carl Mannich ... more details
The Base may refer to The Base film The Base mall , a major shopping complex in Hamilton, New Zealand Al Qaeda Arabic for the Base See also Base disambiguation disambig ... more details
Wiktionary baseBase or BASE may refer to In computing BASE search engine , Bielefeld Academic Search Engine Basically Available, Soft state, Eventual consistency BASE , a consistency model Google Base , an online database provided by Google OpenOffice.org Base , OpenOffice.org s database module, also known as ooBase an HTML element Document head elements HTML element code base code In mathematics Base geometry , a side of a plane figure for example a triangle Base group theory , a sequence of distinct elements of a set Base exponentiation or radix, the b in b sup n sup Base topology , a topological space Radix or base, the number of distinct digits in a positional numeral system In science Base ... form, for example erythromycin base Beta alumina solid electrolyte , a fast ion conductor material In other uses Base baseball , the first, second, and third base on a baseball diamond Base company , an international design, communications, audiovisual, copywriting and publishing firm Base politics , a group of voters who almost always support a single party s candidates Base, Maharashtra , village in India BASE mobile , a Belgian mobile telecommunications operator Bedini Audio Spectral Enhancer , an audio signal processor used in the early 1990s Cooking base , a concentrated flavouring ... , a cosmetic applied to the face Foundation architecture Military base , or non military base, which ... Base, a type of connection on a transistor Base, a position in some cheerleading stunts People with the surname Rob Base , American rapper See also Wikisource1911Enc BaseBase pair , a pair of connected ... involved in forming base pairs Bipolar junction transistor , Base Switch that controls current in a transistor Base and superstructure Marxism BASE jumping Business Association of Stanford Entrepreneurial ... disambiguation ar an Base ast Base bs Baza vor ca Base cs B ze da Base de Base el es Base eo Bazo fr Base gl Base hr Baza io Bazo ia Base it Base he la Basis ... more details
In mathematics, base change may mean Grothendieck s relative point of view in algebraic geometry Base change lifting of automorphic forms See also Change of base disambiguation mathdab ... more details
Triple base may refer to Triple base plan , a United States agricultural policy proposal Triple base propellant , a flashless cordite disambig ... more details
Base Feeder is a Microsoft Microsoft Windows Windows based utility to create Atom and RSS XML feed files for submission to Google Base. Image BasefeederrecipesMain.jpg thumb Screenshot of Base Feeder for Recipes To bulk submit items, you need to create and submit a specially formatted XML file. One can use software like Base Feeder to create the XML files for submission to Google Base. Base Feeder comes in 2 different flavors For Recipes For Products Base Feeder is a proprietary software program priced at about 40. The Products edition is priced at 65. External links http www.google.com base Google Base Google Base web site Category Content management systems ... more details
Unreferenced date December 2009 Aggregate base is typically composed of crushed rock capable of passing through a Convert 3 4 in mm 2 abbr on lk on rock screen. The component particles will vary in size from 3 4 inch down to dust. The material can be made of virgin newly mined rock, or of recycled asphalt and concrete. Base is used as a base course in road ways, as a base course for cement pads and foundations, and as backfill material for underground pipelines and other underground utilities. Base course refers to the sub base layer of an asphalt roadway. Generally consisting of larger grade aggregate, spread and compacted to provide a stable base for further layers of aggregates or asphalt Pavement material pavement . Aggregate base course is often referred to as ABC. DEFAULTSORT Aggregate Base Category Transport engineering Category Road infrastructure ... more details
for the 1943 film Submarine Base 1943 film Unreferenced stub auto yes date December 2009 Image Anoriant submarine.jpg right frame Keroman Submarine Base, a former U boat German submarine base in Lorient , Brittany . Image New Suffolk Sub Memorial.JPG right thumb 97px Plaque stating New Suffolk, New York New Suffolk, New York s claim to be the first submarine base. A submarine base is a military base that shelters submarine s and their personnel. Examples of present day submarine bases include HMNB Clyde , le Longue the base for France s Force oc anique strat gique , Naval Submarine Base Kings Bay , Naval Submarine Base New London , and Rybachiy Nuclear Submarine Base near Petropavlovsk Kamchatsky . The Israeli navy bases its growing submarine force in Haifa Former submarine bases include DORA 1 , HMAS Platypus naval base HMAS Platypus , Naval Submarine Base Bangor now part of Naval Base Kitsap , Mare Island Naval Shipyard a nuclear capable base , USN Submarine Base, Ordnance Island, Bermuda Ordnance Island in Bermuda during World War II, and the formerly classified Balaklava Nuclear submarine base Soviet base at Balaklava in the now Crimea Autonomous Republic of Crimea . The Administrative divisions of New York Hamlet hamlet of New Suffolk, New York claims to be the first submarine base in the United States it served as the base for the USS Holland SS 1 USS Holland , a submarine launched in May 1897. See also Submarine pen List of submarine operators List of countries operating submarines Shore facility Airbase Loss of Strength Gradient External links http www.uboat bases.com index.php?lang en German submarine bases in France World War II http ukrainian.su en photogallery category 41 Russian submarine base in Crimea DEFAULTSORT Submarine Base Category Submarine bases Category Navy bases Category Military installations Navy stub Fort stub fr Base sous marine ... more details
Unreferenced date August 2009 Base richness in ecology is the level in water or soil of Base chemistry chemical base s, such as calcium or magnesium ion s. Many organism s are restricted to base rich or base poor environments. Chemical bases are alkali s, and so base rich environments are pH neutral or alkaline. Because base poor environments have few bases, they are dominated by environmental acid s usually organic acid s and so are pH acidic . However, the relationship between base richness and acidity is not a rigid one &ndash changes in the levels of acids such as Carbonic acid dissolved carbon dioxide may significantly change acidity without affecting base richness. Base rich terrestrial environments are characteristic of areas where the underlying rocks are limestone . Seawater is also base rich, so maritime and Ocean marine environments are themselves base rich. Base poor environments are characteristic of areas where the underlying rocks are sandstone or granite , or where the water is derived directly from rainfall ombrotrophic . Examples of base rich environments Calcareous grassland Fen Limestone pavement Maquis shrubland Taxus Yew woodland Examples of base poor environments Bog Heath habitat Poor fen Moorland Pine woodland Tundra See also Soil Calcicole Calcifuge Category Ecology Category Soil chemistry ecology stub ... more details
The term base flow may refer to Baseflow in hydrology Base flow random dynamical systems in the study of random dynamical systems in mathematics Disambig ... more details
Unreferenced stub auto yes date December 2009 In computing , a base address is an Memory address address serving as a reference point base for other addresses. In computers using relative addressing scheme, to obtain an absolute address , the relevant base address is taken and Offset computer science offset aka displacement is added to it. See also Index register Input Output Base Address DEFAULTSORT Base Address Category Computer memory Compu hardware stub ar kk ... more details
XML Base is a W3C recommendation World Wide Web Consortium recommended facility for defining base Uniform Resource Identifier URI s for parts of XML documents. XML Base recommendation was adopted on 2001 06 27. The attribute xml base may be inserted in XML documents to specify a base URI other than the base URI of the document or external entity. The value of this attribute is interpreted as a URI Reference as defined in RFC 3986 IETF RFC 3986 . It serves the function described in section 5.1.1 of RFC3986, establishing the base URI or IRI for resolving any relative references found within the effective scope of the xml base attribute. In namespace aware XML processors, the xml prefix is bound to the namespace name http www.w3.org XML 1998 namespace as described in Namespaces in XML XML Names . Note that xml base can be still used by non namespace aware processors. External links http www.w3.org TR xmlbase XML Base W3C Recommendation standard stub W3C Standards DEFAULTSORT Xml Base Category XML Category World Wide Web Consortium standards de XML Base pl XML Base ... more details
In mathematics , change of base can mean any of several things Changing numeral system numeral bases , such as converting from base 2 binary numeral system binary to base 10 decimal . This is known as base conversion . The logarithmic change of base formula, one of the Logarithmic identities Changing the base logarithmic identities used frequently in algebra and calculus. The change of bases method for changing between polynomial and normal bases , and similar transformations, for purposes of coding theory and cryptography . Construction of a fibred product of scheme mathematics schemes , in algebraic geometry . See also Base change disambiguation mathdab ... more details
Unreferenced stub auto yes date December 2009 The base commander is the officer assigned to command a military base . In the United States armed forces , a base commander is generally an Officer armed forces O 6 grade officer, meaning Colonel United States Colonel United States Army Army , United States Air Force Air Force , United States Marine Corps Marines or Captain United States Captain United States Navy Navy . A base commander may be a higher or lower rank, however, depending on the installation. In the US Army, a base commander is called a Post Commander. They sometimes establish a base defense operations center s to provide a focus point for defense operations. DEFAULTSORT Base Commander Category Military ranks Mil rank stub ... more details
Orphan date September 2011 The vitreous base is an area in the Fundus eye fundus in which the vitreous , neural retina, and pigment epithelium all are firmly adherent, one to the other. The vitreous is more firmly attached to the retina anteriorly at the vitreous base. The vitreous does not normally detach from the vitreous base, although it can be detached with extreme trauma. Vitreous base detachment is typically associated with Blunt trauma blunt ocular trauma . ref Yanoff & Duker Ophthalmology, 3th edition. ref References reflist Category Eye anatomy ... more details
unreferenced date March 2012 File D glucopyranosyloxymethyluracil.svg thumb Anomer of Glucopyranosyloxymethyluracil File Synthesis of D glucopyranosyloxymethyluracil.svg thumb Biosynthesis of the base J D glucopyranosyloxymethyluracil with A Thymidine hydroxylase B beta glucosyltranferase 1 dT desoxy thymidine 2 HOCH3dU 3 dJ Glucopyranosyloxymethyluracil or Base J is a hypermodified base found in the DNA of kinetoplastids including the human pathogenic Trypanosomes . Base J is formed by the initial hydroxylation of thymidine and the subsequent glucosylation by an as yet unidentified glycosyltransferase . Category DNA de Glucopyranosyloxymethyluracil ... more details
Orphan date February 2009 In finance, a borrowing base is the value assigned to a collection of a borrower s asset s, used by lenders to determine the initial and or ongoing loan amount, and or compliance with one or more debt covenant s. Assets included in the borrowing base are often but not necessarily considered as Collateral finance collateral for the loan. Specific methodology for the calculation of a borrowing base is contract ually specified in an agreement between the borrower and lender. Such agreements typically recognize a percentage of the mutually agreed upon full value of a specific set of assets, which may or may not include all assets owned by the borrower. The agreements also frequently include a methodology for updating asset values on a periodic basis over the life of the loan, allowing the borrowing base to be recalculated regularly. It is common to use Accounts Receivable and Inventory listings to calculate Borrowing Base valuations to determine available credit which usually takes the form of an operating line of credit. Borrowing Base is called Margining in some banking systems. A Borrowing Base Certificate is sometimes used to submit valuations to the lender for analysis. econ stub Category Debt de Borrowing Base Finanzierung ... more details
Unreferenced stub auto yes date December 2009 In politics , the term base refers to a group of voter s who almost always support a single political party party s candidates for election elected office. Base voters are very unlikely to vote for the candidate of an opposing party, regardless of the specific views each candidate holds. In the United States , this is typically because high level candidates must hold the same stances on key issues as a party s base in order to gain the party s nomination and thus be guaranteed ballot access . In the case of legislature legislative elections, base voters often prefer to support their party s candidate against an otherwise appealing opponent in order to strengthen their party s chances of gaining a simple majority typically the gateway to overarching power in a legislature . DEFAULTSORT Base Politics Category Political terms Poli term stub it Base politica ... more details
Unreferenced date October 2006 Cooking base , sometimes called soup base , is a concentrated flavoring compound used in place of stock food stock for the creation of soups , sauces , and gravy gravies . Since it can be purchased rather than prepared fresh, it is commonly used in restaurants where cost is a more important factor than achieving haute cuisine . Veal and chicken base are common, as are beef, lamb and vegetable base. Soup base is available in many levels of quality. Today, these products are produced in low and very low sodium varieties, seafood and vegetarian. DEFAULTSORT Cooking Base Category Food ingredients Ingredient stub ... more details
Image GoogleBase.PNG thumb right Browsing items in Google Base Deleted image removed Image Google base2.png thumb right Uploading items to Google Base Google Base was an online database provided by Google into which any user can add almost any type of content, such as text, images, and structured information in formats such as XML , Portable Document Format PDF , Microsoft Excel Excel , Rich Text Format RTF , or WordPerfect . As of September 2010, the product has since been promoted to Google Merchant Center . ref http googlebase.blogspot.com 2009 09 introducing google merchant center.html ref If Google finds it relevant, submitted content may appear on Google Product Search its shopping search engine , Google Maps or even the web search. The piece of content can then be labeled with attributes ... product, and we ll let you know when there s more news. A major component of Google Base is acting ... can be uploaded to the Google Base servers by browsing your computer or the web, by various File Transfer ... 8, 2009, it was announced that Google Base s separate search page would be discontinued. http googlemerchantblog.blogspot.com ..., it was announced that Google Base s API is deprecated in favor of a set of new APIs known as Google ... See also List of Google services and tools Resources of a Resource ROR Base Feeder Software to create bulk submission Google Base Feeds External links http base.google.com Google Base http base.google.com support bin answer.py?answer 59260&hl en About Google Base http googlebase.blogspot.com Official Google Base Blog http googleblog.blogspot.com 2005 11 first base.html Official Google Blog Press Release http www.programmableweb.com api google base mashups Google Base API Mashups References Reflist Google Inc. DEFAULTSORT Base Category Beta software Category Discontinued Google services Base Category Online databases ar de Google Inc. Dienstleistungen es Google Base fa fr Google Base id Google Base pt Google Base ru Google Base tr Google Base uk Google Base ... more details
unreferenced date January 2008 Image Baseball pick off attempt.jpg thumb right 250px A first baseman standing in white covering first base during a pickoff attempt. In baseball , part of the infielder s job is to cover bases . That is, they stand next to a base in anticipation of receiving the ball thrown from another fielder, so that they may make a play on an opposing baserunner who is approaching that base. On a force play or appeal play , the fielder covering the base stands with one foot on that base. In general, the first baseman covers first base, the second baseman or shortstop covers second, the third baseman covers third, and the catcher covers home base. On balls to the first baseman, the pitcher or second baseman might cover instead. With baserunner s on first and second, sometimes the shortstop will cover third on a Bunt baseball bunt , known as the rotation play or wheelplay. Depending on the situation, however, various fielders can cover any base, sometimes an outfielder can even cover a base. In American English , the expression cover your bases used outside of a baseball setting means to be thoroughly prepared for something. Category Baseball terminology baseball stub ja pt Cobertura de base ... more details
In geometry , a base is a side of a plane figure or face of solid, particularly one perpendicular to the direction height is measured or on what is considered to the bottom. This usage can be applied to a triangle , parallelogram , trapezoids , Cylinder geometry cylinder , cone , pyramid , parallelopiped or frustum . By extension, the length or area of a base is also called a base. As such, bases are commonly used in formulas for area and volume . See also Area Volume Principal square root References cite book title Plane Geometry first1 C.I. last1 Palmer first2 D.P. last2 Taylor publisher Scott, Foresman & Co. year 1918 pages 38, 315, 353 url http books.google.com books?id k9oZAAAAYAAJ Elementary geometry stub Category Area Category Elementary geometry Category Triangle geometry Category Volume ca Base geometria es Base geometr a eu Oinarri geometria fr Base g om trie it Base geometria nn Grunnlinje ... more details
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