申请人:Bayer Aktiengesellschaft
公开号:US04686291A1
公开(公告)日:1987-08-11
A process for the preparation of a methyl ketone of the formula ##STR1## in which R.sup.1 is alkyl, alkenyl, alkinyl, optionally substituted aryl or optionally substituted heteroaryl, R.sup.2 is alkyl, R.sup.3 is alkyl or R.sup.2 and R.sup.3, together with the carbon atom to which they are bonded, from a cycloalkyl ring, comprising reacting a methyl sec.-alkyl ketone of the formula ##STR2## with a halide of the formula R.sup.1 --CH.sub.2 --X in which X is halogen, in the presence of a base, a diluent, and a phase-transfer catalyst.
一种制备式为##STR1##中的甲基酮的过程,其中R.sup.1是烷基,烯基,炔基,可选的取代基芳基或可选的取代基杂芳基,R.sup.2是烷基,R.sup.3是烷基或R.sup.2和R.sup.3与它们连接的碳原子一起形成环状烷基,包括在碱,稀释剂和相转移催化剂的存在下,将式为##STR2##的甲基仲烷基酮与式为R.sup.1 --CH.sub.2 --X的卤代物反应,其中X是卤素。