Competitive Pseudopericyclic [3,3]- and [3,5]-Sigmatropic Rearrangements of Trichloroacetimidates
作者:Shikha Sharma、Trideep Rajale、Daniel K. Unruh、David M. Birney
DOI:10.1021/acs.joc.5b01355
日期:2015.12.4
The Woodward–Hoffmann rulespredict whether concerted pericyclic reactions are allowed or forbidden based on the number of electrons involved and whether the cyclic orbital overlap involves suprafacial or antarafacial orbital overlap. Pseudopericyclic reactions constitute a third class of reactions in which orthogonal orbitals make them orbitalsymmetry allowed, regardless of the number of electrons
The interaction of alkali hydroxide solutions with acetates of o-quinols leads to further changes besides saponification of the acetyl group in most of the cases investigated. Especially noteworthy is the observed scission of the quinol ring to give aliphatic compounds and the formation of dimeric compounds by addition processes. The genetic connexion between the various products of reaction could