FUNCTIONALIZED CYCLOPENTANE DERIVATIVES FROM THE PHOTOADDUCTS OF METHYL 2,4-DIOXOPENTANOATE-OLEFINS: ALTERNATIVE SYNTHESES OFdl-DEHYDROIRIDODIAL ANDdl-CHRYSOMELIDIAL
Synthetic Photochemistry. XXIX. A Convenient Preparation of 1,2,3-Substituted Cyclopentenes from the Photoadducts of Methyl 2,4-Dioxopentanoate–Isoprene
作者:Nobuo Kato、Hitoshi Takeshita
DOI:10.1246/bcsj.58.1574
日期:1985.5
Photoadducts obtained by cycloaddition of isoprene with methyl 2,4-dioxopentanoate were converted to cyclopentenederivatives. The stereochemistry of the intermediate glycols was estabilished by chemical correlations to each other; only the cis-glycols were convertible to the cyclopentenes under the conditions employed, suggesting a fore-going acetylation of the hindered glycol functions.