Propensity of 4-Methoxy-4-vinyl-2-cyclopentenones Housed in Tri- and Tetracyclic Frameworks for Deep-Seated Photochemical Rearrangement
作者:Leo A. Paquette、Fabrice Gallou、Zhong Zhao、David G. Young、Jian Liu、Jiong Yang、Dirk Friedrich
DOI:10.1021/ja001813q
日期:2000.10.1
tetracyclic 2-cyclopentenones has been examined in two solvents. Prepared by a convergent pathway involving the coupling of cyclopentenyl bromide 12 to several chiral ketones followed by desilylation, perruthenate oxidation, and ring-closing metathesis, the reactants were conveniently irradiated through quartz. Following promotion to the triplet level, a cyclopropylcarbinylbiradicalintermediate is presumably