A novel process for producing an optically active (E)-7-[2-cyclopropyl-4-(4-fluorophenyl quinolin-3-yl]-5-hydroxy-3-oxohept-enoic acid ester of formula (III) which is important as an intermediate for synthesizing medicines, comprises reacting 1,3-bis(trimethylsilyloxy)-1-alkoxybuta-1,3-diene of formula (I) with (E)-3-[2-cyclopropyl-4-(fluorophenyl)quinolin-3-yl]-prop-2-en-1-al of formula (II) in the presence of an optically active binaphthol-titanium complex obtained from 1,1′-bi-2-naphthol with titanium tetraisopropoxide, a metal salt and an amine, and then subjecting the reaction product to desilylation.
一种生产光学活性(E)-7-[2-环丙基-4-(4-
氟苯基
喹啉-3-基]-5-羟基-3-氧代
庚烯酸酯(III)的新工艺,该化合物是合成药物的重要中间体,包括在1,1'-联-
2-萘酚和
钛四异
丙酸酯得到的光学活性联
苯酚-
钛络合物、
金属盐和胺的存在下,将公式(I)的1,3-双(三甲基
硅氧基)-1-烷氧基
丁烯与公式(II)的(E)-3-[2-环丙基-4-(
氟苯基)
喹啉-3-基]-丙-2-烯-1-醛反应,然后使反应产物脱
硅化。