Intramolecular cyclization using palladium-catalyzed arylation toward formyl and nitro groups
作者:Hideaki Muratake、Hiroshi Nakai
DOI:10.1016/s0040-4039(99)00185-9
日期:1999.3
Intramolecular arylation of properly designed substrates bearing a formyl or nitro terminating group was achieved employing a PdCl2(Ph3P)(2)-Cs2CO3 catalyst system to form various carbocyclic compounds. Arylation toward the formyl group occurred at the a-position (alpha-arylation) or at the carbonyl carbon (carbonyl-arylation) depending on the structure of the substrates and on the reaction solvent. The cl-arylated secondary nitro group was partially transformed to ketone, whereas the tertiary nitro group was partially eliminated to a styrene type of olefin. (C) 1999 Elsevier Science Ltd. All rights reserved.