Add time:08/30/2019         Source:sciencedirect.com

Whereas Li(t-Bu) is an efficient base for the generation of Ph3PCHOMe, Li(n-Bu) gives both this ylide and a butylidene ylide which is consistent with a Ph2(MeOCH2)PCH(n-Pr) formulation. 13P NMR studies and their reactions with acylsilanes are described.

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