Formation de cyclopentanes lors de réactions de Heck
作者:Guy Fournet、Geneviève Balme、Jacques Gore
DOI:10.1016/s0040-4020(01)90073-0
日期:1990.1
The Heck reaction of alkenes bearing in δ position an enolate of β-diester, βketo ester or β-sulfonyl ester leads to cyclopentanes issued from the intramolecular displacement of the carbone sp3-palladium bond by this enolate. This cyclisation is not observed when the enolate is in β or ε position or in the case of a δ-ethylenic amine and βelimination products are only obtained.