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##的甲基酮的方法,其中R.sup.1是烷基,烯基,炔基,可选取代芳基或可选取代杂环芳基,R.sup.2是烷基,R.sup.3是烷基或R.sup.2和R.sup.3,与它们结合的碳原子形成一个环状烷基,包括在碱,稀释剂和相转移催化剂的存在下,将式为##STR2##的甲基次烷基酮与式为R.sup.1 --CH.sub.2 --X的卤代物反应,其中X是卤素。