Sone, Toshihiko published the artcileCatalytic Asymmetric Synthesis of 2,2-Disubstituted Terminal Epoxides via Dimethyloxosulfonium Methylide Addition to Ketones, Formula: C3H9ClOS, the publication is Journal of the American Chemical Society (2008), 130(31), 10078-10079, database is CAplus and MEDLINE.
Catalytic asym. Corey-Chaykovsky epoxidation of ketones with dimethyloxosulfonium methylide using an La-Li3-tris(binaphthoxide) + Ar3P:O (Ar = 2,4,6-trimethoxyphenyl) complex proceeded smoothly at room temperature, and 2,2-disubstituted terminal epoxides were obtained with high enantioselectivity (91-97%) and yield (>88-99%) from a broad range of Me ketones with 1-5 mol% catalyst loading. The use of achiral additive Ar3P:O was important to achieve high enantioselectivity.
Journal of the American Chemical Society published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C19H14O2, Formula: C3H9ClOS.
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