申请人:Toyo Stauffer Chemical Co., Ltd.
公开号:US04604486A1
公开(公告)日:1986-08-05
A method of preparing optically active ketones having the general formula ##STR1## wherein R.sup.2 and R.sup.3 indicate hydrocarbon groups having 1 to 20 carbon atoms characterized by submitting an optically active sulfonyloxy alcohol having the general formula ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 indicate hydrocarbon groups having carbon atoms of 1 to 20 and which optionally contain N, O, P and S. The symbol * indicates asymmetric carbon atoms to rearrangement in a solvent and in the presence of organoaluminum compounds given by the general formula R.sub.3-n.sup.4 AlX.sub.n, (wherein R.sup.4 indicates an alkyl group having carbon atoms of 1 to 20 and X indicates a halogen atom, an alkoxy group or a CN group. n is 1, 1.5 or 2).
一种制备具有一般式##STR1##的光学活性酮的方法,其中R.sup.2和R.sup.3表示具有1至20个碳原子的碳氢基团,其特征在于将具有一般式##STR2##的光学活性磺酰氧基醇在溶剂和有机铝化合物的存在下进行重排,其中R.sup.1、R.sup.2和R.sup.3表示具有1至20个碳原子且可选含有N、O、P和S的碳氢基团。符号*表示不对称碳原子。有机铝化合物的一般式为R.sub.3-n.sup.4 AlX.sub.n(其中R.sup.4表示具有1至20个碳原子的烷基基团,X表示卤素原子、烷氧基团或CN基团,n为1、1.5或2)。