ChemInform Abstract: Stereoselective Synthesis of Methyl trans-Chrysanthemate and Related Derivatives.

✍ Scribed by A. KRIEF; L. PROVINS

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 29 KB
• Volume: 29
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199827069

✦ Synopsis

Stereoselective Synthesis of Methyl trans-Chrysanthemate and Related Derivatives.

-The title esters (III) and (IV) are prepared by a novel type of cyclopropane formation. It is noteworthy that the earlier reported thionyl chloride-triethylamine method for the cyclization step is not successful. In the case of the compounds (IIIc)/(IVc) and (IIId)/(IVd) each substance is a mixture of diastereomers in ratios