Industrial Syntheses of Cyclopentenones.

Abstract

The purpose of the present research is to establish new methods in the commercial production of cyclopentenones. Cyclopentenones are very important compounds for fine chemical industry. (agrochemicals, perfumes, pharmaceuticals)
The present paper is concerned with syntheses of cyclopentenones through a molecular rearrangement of 2-furylcalbinols, which was discovered by G. Piancatelli. On this reaction, several improvements are achieved from the industrial viewpoints. This method is applied for the syntheses of following compounds.
(1) intermediates of pyrethroidal insecticides
(2) optical active cyclopentenones
(3) jasmones
(4)intermediates of prostagrandins
(5) norbornadienes …… compounds for the storage of light energy