Tandem Addition/Electrocyclization/Benzylation of Alkyl Aryl-1,3-dienes and Aromatic Aldehydes: Access to Highly Substituted Indenes
作者:S. K. Mahesh、Jagadeesh Babu Nanubolu、Gangarajula Sudhakar
DOI:10.1021/acs.joc.9b00679
日期:2019.6.21
BF3·Et2O-mediated synthesis of multisubstituted indenes from alkyl aryl-1,3-dienes and aromatic aldehydes through tandem addition/4π-electrocyclization/benzylation via tetrahydroindeno-oxepine/quinonemethide followed by an intramolecular 1,6-hydride transfer is described. This novel reaction pathway is established by the isolation of potential intermediates and with the support of deuterium-labeling studies