申请人:Sumitomo Chemical Company, Limited
公开号:EP1120393A1
公开(公告)日:2001-08-01
There is provided a process for producing 3,3-dimethyl-2-formylcyclopropanecarboxylic ester of formula (1):
wherein R represents an alkyl group, a cycloalkyl group or an optionally substituted aralkyl group,
which comprises reacting chrysanthemic acid ester of formula (2):
wherein R represents the same meaning as that described above, with hydrogen peroxide in the presence of at least one catalyst selected from tungstic oxide, tungstic acid, tugstate, alkylrhenium trioxide, molybdic oxide, molybdate, a heteropoly acid comprising a hetero atom selected from a phosphorus, boron or silicone atom and a poly atom selected from tungsten or molybdenum and a salt of said heteropoly acid.
提供了一种生产式 (1) 的 3,3-二甲基-2-甲酰基环丙烷羧酸酯的工艺:
其中 R 代表烷基、环烷基或任选取代的芳烷基、
其中 R 代表烷基、环烷基或任选取代的芳烷基:
其中 R 代表与上述相同的含义,在至少一种选自氧化钨、钨酸、钨酸盐、烷基三氧化 铼、氧化钼、钼酸盐、杂多酸的催化剂存在下,与过氧化氢反应,杂多酸包含选自磷、 硼或硅原子的杂原子和选自钨或钼的多原子,以及所述杂多酸的盐。