π-Facial diastereoselectivity in the electrophilic and electrophilic–nucleophilic additions to dimethyl (1R,2R,3S,4S)-bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylate
作者:Graeme R. Jones、Pierre Vogel
DOI:10.1039/c39930000769
日期:——
The Ï-facial selectivity of attack of electrophilic species (OsO4, m-ClC6H4CO3H, BH3) on the sterically unbiased dimethyl (1 R,2R,3S,4S)-bicyclo[2.2.2]oct-5-ene-2,3-dicarboxylate is controlled syn to the exo electron-withdrawing ester substituents, and the reactions of phenylselenyl chloride and phenylsulfenyl chloride show opposing diastereoselectivities, which can be explained using the Cleplak transition state theory.
亲电物种(OsO4、m-ClC6H4CO3H、BH3)对立体无偏的 (1 R,2R,3S,4S)-bicyclo[2.2.2]辛-5-烯-2,3-二甲酸二甲酯上的立体无偏二甲基 (1 R,2R,3S,4S)-bicyclo[2.2.