Abstract The stereochemistry of the major osmylation products of carbohydrate-based allylic alcohols can usually be predicted by application of Kishi's empirical rule. In particular, the addition of OsO 4 can be formulated as taking place in the more abundant conformation on the surface anti to a pyranose or furanose ring-oxygen atom located at a stereocentre adjacent to the olefinic linkage. Exceptions
摘要通常可以通过使用Kishi的经验规则来预测基于
碳水化合物的
烯丙基醇的主要渗透产物的立体
化学。特别地,OsO 4的添加可以配制成在表面上相对于位于邻近
烯键的立体中心的
吡喃糖或
呋喃糖环-
氧原子更丰富的构象发生。共轭羰基化合物有时会遇到Kishi的同化作用经验规律的例外情况。