Catalytic enantioselective conjugate addition of fluorobis(phenylsulfonyl)methane to enals: synthesis of chiral monofluoromethyl compounds
作者:Shilei Zhang、Yinan Zhang、Yafei Ji、Hao Li、Wei Wang
DOI:10.1039/b907399j
日期:——
A new highly catalytic enantioselective Michael addition of fluorobis(phenylsulfonyl)methane to α,β-unsaturated aldehydes has been developed for the preparation of chiral monofluoromethyl compounds under mild reaction conditions.
A highly chemo‐ and enantioselectiveorganocatalyticaddition of fluorocarbon nucleophiles, such as 1‐fluoro‐bis(phenylsulfonyl)methane, to α,β‐unsaturatedaldehydes is presented (see scheme). The reactions are catalyzed by simple chiral amines and give access to optically active fluorine derivatives in good yields and up to 95 % ee. Notably, the methodology can be applied to the formation of a chiral