申请人:Enichem Sintesi S.p.A.
公开号:US05270470A1
公开(公告)日:1993-12-14
A process is disclosed for the synthesis of 4-allyloxy-2,2,6,6-tetraalkylpiperidinic derivatives by starting from the corresponding 2,2,6,6-tetraaLkyLpiperidinols and from an allyl halide, characterized in that the reaction is made to take place in the absence of water, and in the presence of a finely subdivided allyl-metal hydroxide and of small amounts of a phase-transfer catalyst. The products, which are thus obtained with yields higher than 90%, are useful a stabilizers for polymers or as intermediates for such products.
本发明公开了一种合成4-烯丙氧基-2,2,6,6-四烷基哌啶衍生物的方法,该方法从相应的2,2,6,6-四烷基哌啶醇和烯丙基卤素开始,并且在无水的条件下,在细分的烯丙基金属羟化物和少量相转移催化剂的存在下进行反应。通过此方法获得的产物收率高达90%以上,可用作聚合物的稳定剂或作为这些产品的中间体。