1440943-36-1Relevant articles and documents
Asymmetric (4+3) cycloadditions of enantiomerically enriched epoxy enolsilanes
Lo, Brian,Lam, Sarah,Wong, Wing-Tak,Chiu, Pauline
supporting information, p. 12120 - 12123 (2013/01/16)
A f(oxy) allyl: The intermolecular (4+3) cycloaddition of enantiomerically enriched epoxy enolsilanes produces cycloadducts with up to 99 % ee, thus implying the reaction does not proceed by the putative achiral oxyallyl cation intermediate, but through a transiently chiral electrophile which retains the stereochemical information of the epoxide (see scheme; TES=triethylsilyl, Tf=trifluoromethanesulfonyl). Copyright