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A class of compounds in which a positively charged negative element from group V or VI of the periodic table (for example, N, O, S, P) is bonded to a carbon atom having an unshared pair of electrons; ylides have been observed in a number of enzyme-catalyzed reactions.
References in periodicals archive ?
Pyrrolo-[1, 2-a] imidazoles have been synthesized by diastereoselective of 1,3dipolar cycloaddition by using 4, 5-dihydroimidazolium ylides with an alkylating agent and base or more recently carbenoid insertion to dihydroimidazoles.
Azomethine ylides have been used as 1, 3dipoles in cycloaddition reactions for the formation of five-membered rings containing nitrogen atom in the ring focused to substantial attention.
Mechanically induced solid-state generation of phosphorus ylides and the solvent-free Wittig reaction.
The team created the ylide (benzoylmethylene) triphenylphosphorane by ball-milling (phenacyl) triphenylphosphonium bromide with anhydrous potassium carbonate ([K.
Huang, Stereoselective Synthesis of (2z)-a-bromo-a, bUnsaturated Esters via Arsonium Ylide, Synth.