2-methyl-3-(3,4-methylenedioxyphenyl)propanal, and

专利名称：2-methyl-3-(3,4-methylenedioxyphenyl)propanal, andmethod for production thereof

发明人：Takashi Doi,Yoshihiro Yoshida,Eiji

Sajiki,Satoru Fujitsu

申请号：US12526697申请日：20080214公开号：US08168809B2公开日：20120501

摘要：Disclosed are: (1) a method for producing 2-methyl-3-(3,4-methylenedioxyphenyl)propanal, which comprises the step of providing a reactionmixture containing 1-acetoxy-2-methyl-3-(3,4-methylenedioxyphenyl)-1-propene by aprocess for reacting 1,2-methylenedioxybenzene with 2-methyl-3,3-diacetoxypropene ora process for reacting 1,2-methylenedioxybenzene, methacrolein and acetic anhydridewith one another; subjecting the reaction mixture to hydrolysis or transesterification withan alcohol to provide a reaction mixture containing 2-methyl-3-(3,4-methylenedioxyphenyl)propanal; and purifying by distilling the reaction mixture, whereina high boiling point compound contained in the reaction mixture is removed by a specificprocedure; and (2) 2-methyl-3-(3,4-methylenedioxyphenyl)-propanal produced by themethod, which has an acetic acid content of a less than 40 ppm, is useful as a perfume,and has a high purity.

申请人：Takashi Doi,Yoshihiro Yoshida,Eiji Sajiki,Satoru Fujitsu

地址：Yamaguchi JP,Yamaguchi JP,Chiba JP,Yamaguchi JP

国籍：JP,JP,JP,JP

代理机构：Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.

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