Ylides benzoylmethyl sulfonium

Organocatalytic Asymmetric Synthesis of Cyclopropanes [12]. The first report of synthesis of cyclopropanes was published by MacMillan and co-workers in 2005. Their methodology deals with the reaction between enals (15) and benzoylmethyl sulfonium ylides (16) to afford the final cyclopropanes (17) in good yields and enantioselectivities (Scheme 10.8,(a)) [13]. 

H-benzotriazole 1003 0-benzoyl esters 134 benzoyl hydrazones 440 N-benzoyl hydrazones 394 benzoyl peroxide 72 benzoylmethyl sulfonium ylides 1115 benzyl bromide 545 0-benzyl hydroxyacetone 705 N-benzyl ketimines 958 benzyl protecting groups 558 benzyl thiols 52 a-benzylation 1184 -aldehydes 1184 0-benzylhydroxyamines 1003 benzylideneacetone 591 benzylthiol 257 betaines 257... 

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