Process for Preparing Enantiopure E-(2S)-Alkyl-5-Halopent-4-Enoic Acids and Esters

• Main Authors: STEINBAUER GERHARD, POJARLIEV PETER, ROSSLER MARKUS
• Format: Patent
• Language: English
• Published: 13.11.2008
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

A process for preparing enantiopure E-(2S)-alkyl-5-halopent-4-enoic acids and their esters of the formula (I), in which R is a C1-C6-alkyl radical, R1 is H or C1-C4-alkyl and X is chlorine, bromine or iodine, in which the corresponding racemic 2-alkyl-5-halopent-4-enoic acid a) is reacted in a suita...