Process for producing optically active oxoheptenoic acid ester

Details Process for producing optically active oxoheptenoic acid ester Process for producing optically active oxoheptenoic acid ester

2006-06-20

2006-06-20

Seaman, D. Margaret (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07064209

ABSTRACT:
A novel process for producing an optically active (E)-7-[2-cyclopropyl-4-(4-fluorophenyl quinolin-3-yl]-5-hydroxy-3-oxohept-6-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-(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

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“Chemistry Letters” Tsuji et al.; pp. 649-652; 1978.

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