title: Dichotomies in microwave-assisted propargyl-isomerization-Claisen domino sequences dependent on base strengths.
abstract: Microwave-assisted unimolecular isomerization-Claisen 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[3.2.1.0(2,7)]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.
authors.affiliation: Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69121 Heidelberg, Germany.
authors.forename: Daniel M
authors.initials: DM
authors.lastname: D'Souza
authors.forename: Wei-Wei
authors.initials: WW
authors.lastname: Liao
authors.forename: Frank
authors.initials: F
authors.lastname: Rominger
authors.forename: Thomas J J
authors.initials: TJ
authors.lastname: Müller