Bis-alkylation of dimetallated phenylsulfonylmethyl triflone. A n+1 annulation strategy for synthesis of cyclic vinyl sulfones.
作者:S.S. Magar、P.L. Fuchs
DOI:10.1016/s0040-4039(00)77705-7
日期:1992.2
Bis-metallation of phenylsulfonylmethyl triflone 4b produces a geminal dianion which can be dialkylated to afford alpha-phenylsulfonyl triflones. Treatment of these compounds with DBU affords vinyl sulfones which can be isomerized to allyl sulfones.