申请人:KUREHA KAGAKU KOGYO KABUSHIKI KAISHA
公开号:EP0029362A1
公开(公告)日:1981-05-27
Known catalysts for producing a diallyl ester of an aromatic dicarboxylic acid, particularly a diallyl ester of an aromatic symmetrical dicarboxylic acid, by heating an ester of an aromatic dicarboxylic acid with an allyl alcohol to effect ester exchange, suffer from low catalytic activity and a tendency to cause formation of by-products and colouration of the product. These problems can be overcome by effecting reaction in the presence of, as catalysts, both (A) at least one organic tin compound of the formula (I)
wherein R1 and R2 independently represent alkyl of 1 to 8 carbon atoms or phenyl, and X represents two halogen atoms or an oxygen atom, and (B) at least one substance which is an element or compound of an element belonging to group IIa, IIb, IIIa, IVa, IVb or VIII of the periodic table of elements, other than organic tin compounds represented by the general formula (I).
用于生产芳香族二羧酸二烯丙基酯,特别是芳香族对称二羧酸二烯丙基酯的已知催化剂,通过加热芳香族二羧酸酯与烯丙基醇以实现酯交换,存在催化活性低、易形成副产物和产品着色的问题。要克服这些问题,可以在以下两种催化剂的存在下进行反应 (A) 至少一种式 (I) 的有机锡化合物
其中 R1 和 R2 独立地代表 1 至 8 个碳原子的烷基或苯基,X 代表两个卤素原子或一个氧原子,以及 (B) 至少一种属于元素周期表中 IIa、IIb、IIIa、IVa、IVb 或 VIII 族的元素或元素化合物的物质,但通式 (I) 所代表的有机锡化合物除外。