AgOAc-mediated rearrangement of gem-dibromospiropentanes in trifluoroacetic acid
作者:Lei Wu、Min Shi
DOI:10.1016/j.tetlet.2009.01.116
日期:2009.4
AgOAc-mediated intramolecular skeleton rearrangement reaction of gem-dibromospiropentanes produced the corresponding naphthalene and indene derivatives in moderate to good yields under mild conditions. (C) 2009 Elsevier Ltd. All rights reserved.
Spiropentanes undergo carbonylation under an atmosphere of carbon monoxide in the presence of a rhodium(I)−phosphine catalyst, giving 3-methylcyclopent-2-enones. The catalytic cycle involves two mechanistically different carbon−carbon cleavage processes. The spiropentane carbonylation was successfully applied to a short synthesis of (±)-β-cuparenone.