Explore: Ylide

An ylide (/ˈɪlaɪd/) or ylid (/ˈɪlɪd/) is a neutral dipolar molecule containing a formally negatively charged atom (usually a carbanion) directly attached

chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide called a Wittig reagent. Wittig reactions are most commonly used to convert

Nitrile ylides also known as nitrilium ylides or nitrilium methylides, are generally reactive intermediates formally consisting of a carbanion of an alkyl

dipole or a nucleophilic dipole, which includes azomethine ylide, carbonyl ylide, nitrile ylide, azomethine imine, carbonyl imine and diazoalkane. These

Azomethine ylides are nitrogen-based 1,3-dipoles, consisting of an iminium ion next to a carbanion. They are used in 1,3-dipolar cycloaddition reactions

Corey and Michael Chaykovsky. The reaction involves addition of a sulfur ylide to a ketone, aldehyde, imine, or enone to produce the corresponding 3-membered

15596-07-3) contains the C2O functionality. Sometimes called Bestmann's Ylide, it is a yellow solid. Frenking, Gernot; Tonner, Ralf "Divalent carbon(0)

The Peterson olefination (also called the Peterson reaction) is the chemical reaction of α-silyl carbanions (1 in diagram below) with ketones (or aldehydes)

and negatively charged functional groups. (1,2-dipolar compounds, such as ylides, are sometimes excluded from the definition.) Some zwitterions, such as

charges on adjacent atoms is called an ylide, so sometimes the carbanion form of TPP is referred to as the "ylide form". In several reactions, including