申请人:HAMARI YAKUHIN KOGYO KABUSHIKI KAISHA
also known as HAMARI CHEMICALS, LTD.
公开号:EP0220792A1
公开(公告)日:1987-05-06
A 2-aryl-propionaldehyde of the formula
(wherein Ar denotes substituted or unsubstituted phenyl, especially
is produced in high yield by reacting a methyl aryl-ketone of the formula,
with phenyldimethylsulfonium methylsulfate of the formula,
in the presence of alkali metal hydroxide to obtain a reaction mixture containing 2-phenyl-1,2-epoxypropane of the formula.
and thioanisole, and subjecting the reaction mixture to contact with anhydrous MgCl2. The propionaldehyde compound is also produced in high yield by contacting the epoxypropane compound with anhydrous MgC12 in the presence of a soft nucleophile such as a sulfide, a thiol and a phosphine.
式中的 2-芳基丙醛
(其中 Ar 表示取代或未取代的苯基,尤其是
式中的甲基芳基酮与式中的苯基二甲基锍甲硫酸盐反应,可高产制得、
式中的甲基芳基酮与苯基二甲基甲磺酸铵在碱金属氢氧化物存在下,以高收率生成、
在碱金属氢氧化物存在下进行反应,得到含式 2-苯基-1,2-环氧丙烷的反应混合物。
和硫代苯甲醚的反应混合物,并使反应混合物与无水氯化镁接触。在硫化物、硫醇和膦等软亲核物存在的情况下,将环氧丙烷化合物与无水 MgC12 接触,也能高产丙醛化合物。