Synthesis of the Stereoisomeric Mixture of the Compound Having the Proposed Structure for “Auxin b Lactone”

Abstract

The composed having the proposed structure for auxin b lactone (XVIII) was synthe-sized by formic acid hydrolysis of 4-ethoxy-6-(3, 5-di-sec-butyl-l-cyclopenten-l-yl)-5, 6-dihydro-2-pyrone (XVII) which was, in turn, prepared by the Reformatsky reaction of 3, 5-di-sec-butyl-1-cyclopentenealdehyde (XVI) with ethyl γ-bromo-, β-ethoxycrotonate.