In organic chemistry, a carbanion is an anion in which carbon is negatively charged.[failed verification] Formally, a carbanion is the conjugate base of...

chemical reaction used in organic chemistry of stabilized phosphonate carbanions with aldehydes (or ketones) to produce predominantly E-alkenes. In 1958...

(N≡CCH2–), a type of nitrile group The cyanomethyl radical (N≡CCH2·) The cyanomethyl carbanion (N≡CCH2−) Ethynyl Hydroxymethyl Trifluoromethyl v t e...

molecular entity. Finally, conjugate base refers to the formation of the carbanion intermediate, which is the conjugate base of the starting material. E1cB...

action the substrate first ionizes into a carbanion and a positively charged organic residue. The carbanion then quickly recombines with the electrophile...

as an acid by donating its proton and forming a carbanion. Normally, reactions that form carbanions are highly unfavorable, but the positive charge on...

Organomercury chemistry refers to the study of organometallic compounds that contain mercury. Typically the Hg–C bond is stable toward air and moisture...

centred on a carbon, it is termed a carbocation (if positively charged) or carbanion (if negatively charged). Monatomic ions are formed by the gain or loss...

Streitwieser, Jr., E. Juaristi, and L. L. Nebenzahl, in Comprehensive Carbanion Chemistry Volume 5: Part A Structure and Reactivity (Studies in Organic...

dipolar molecule containing a formally negatively charged atom (usually a carbanion) directly attached to a heteroatom with a formal positive charge (usually...

alkyl group may be transferred as an alkyl carbocation, a free radical, a carbanion, or a carbene (or their equivalents). Alkylating agents are reagents for...

the rate of exchange is primarily influenced by the stabilities of the carbanion intermediates (sp > sp2 > sp3) of the organolithium reagents. Two mechanisms...

The OGDH E1-TPP mechanism involves the formation of a stabilized carbanion intermediate....

characterization of the lifetimes and thermodynamic stability for carbocation and carbanion intermediates of organic reactions in water and the determination of the...

Because of the high polarity of the C-Na bonds, they behave like sources of carbanions (salts with organic anions). Some well-known derivatives include sodium...

groups are even more acidic because the carbonyl groups help stabilize the carbanion resulting from the removal of a proton from the methylene group between...

by decarboxylation, followed by hydrolysis of the resulting stabilized carbanion. ZCH2CO2CH3 + I− + H2O → ZCH3 + CH3I + CO2 + OH− The reaction is carried...

the right. A carbanion is a organic molecule where a carbon atom is not electron deficient but contain an overall negative charge. Carbanions are strong...

nucleophilicity of the attacking nucleophile. Nucleophilic addition of a carbanion or another nucleophile to the double bond of an alpha, beta-unsaturated...

storage by amine gas treating. Only very strong nucleophiles, like the carbanions provided by Grignard reagents and organolithium compounds react with CO2...

Current consensus suggests that the mechanism proceeds through a stabilized carbanion at the C6 after loss of carbon dioxide. This mechanism was suggested from...

resonance stabilized imine (iminium ion or imine salt). The addition of a carbanion from a CH acidic compound (any enolizable carbonyl compound, amide, carbamate...

associate with the alcohol group. The resulting carbanion is stabilized by the structure of the carbanion itself via resonance charge distribution and by...

heterolysis in a nucleophilic rearrangement or anionotropic rearrangement a carbanion in an electrophilic rearrangement or cationotropic rearrangement a free...

groups, which make the adjacent methylene hydrogen acidic enough to form a carbanion when reacted with the base, B:. For the alkene (the Michael acceptor)...

a reactive intermediate involved in the reaction is a carbocation, a carbanion or a free radical, and whether the substrate is aliphatic or aromatic...

the cofactor PLP (pyridoxal phosphate), which functions by stabilising carbanion intermediates. If it reacts with cysteine, it produces cystathionine,...

or the Corey–Chaykovsky reagent or α-silyl carbanions in the Peterson olefination a phosphonate carbanion in the Horner–Wadsworth–Emmons reaction a pyridine...

((CH3)2CO) is about 1020 times more acidic than methane. The resulting carbanions are key intermediates in many reactions in organic synthesis and biosynthesis...

Mannich reaction, in addition to an amine and a carbonyl compound, is a carbanion, which plays the role of the nucleophile in the nucleophilic addition...