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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.
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Summary: Pyrroloimidazoles have been synthesized by diastereoselective of 1,3-dipolar cycloaddition by using 4, 5-dihydroimidazolium ylides with an alkylating agent and base.
Karimi, "A facile synthesis of stable phosphorus ylides derived from 3,6dibromocarbazole and kinetic investigation of the reactions by UV spectrophotometry technique," Heteroatom Chemistry, vol.
Kilner, "1,3-dipolar cycloaddition of stabilised and non-stabilised azomethine ylides derived from uracil polyoxin C (UPoC): access to nikkomycin analogues," Tetrahedron, vol.
In recent years, we have endeavored to expand the synthesis of phosphorous ylides along with developing experimental and theoretical studies on the kinetics and mechanisms of these reactions [29-36].
Pecharsky points out another intriguing difference between conventional solvent-based ylide generation and ball-milling: the bases required for each process.
Huang, Stereoselective Synthesis of (2z)-a-bromo-a, bUnsaturated Esters via Arsonium Ylide, Synth.
Sigmund, "1, 3-Dipolar cycloaddition reactions of pyrazolidinium ylides with acetylenes.
Elguero, "Behavior of ylides containing N, O, and C atoms as hydrogen bond acceptors," Journal of the American Chemical Society, vol.
Formation and reactions of [beta]-ketosulfonium perchlorates and ylides," Journal of Organic Chemistry, vol.
A small sample of the individual chapter topics includes arborescent polymers with a mesoscopic scale, living polymerization of ylides, highly branched functional polymer architectures using click chemistry, and precision polyolefins.
In this work, they present 13 review articles describing various aspects of this emerging field, including asymmetric synthesis of chiral sulfoxides, asymmetric synthesis of optically active sulfinic acid esters, asymmetric transformations mediated by sulfinyl groups, synthesis and applications of chiral dithiocetal derivatives, synthesis and use of chiral sulfur ylides, synthesis and use of chiral sulfoximines, synthesis and use of chiral sulfinamides, asymmetric catalysis using sulfoxides as ligands, sulfones in asymmetric catalysis, and computational studies on asymmetric reactions with sulfur reagents.