Dichotomies in microwave-assisted propargyl-isomerization–Claisen domino sequences dependent on base strengths
作者:Daniel M. D'Souza、Wei-Wei Liao、Frank Rominger、Thomas J. J. Müller
DOI:10.1039/b714351f
日期:——
Microwave-assisted unimolecular isomerizationâClaisen domino reactions of 1,3-di(hetero)aryl propargyl trityl ethers lead, depending on the basicity of the amine, either to the formation of tricyclo[3.2.1.02,7]oct-3-enes (with triethylamine) or to indanes (with DBU). Based upon product analyses and computations, this base dependent dichotomy can be rationalized as a sequel of pericyclic reactions with intermediate protonation and deprotonation.