Phase-Transfer Catalyzed Nucleophilic Addition of Arylalkanenitrile Carbanions to Substituted Propenylarenes
作者:Wojciech Lasek、Mieczysław Makosza
DOI:10.1055/s-1993-35865
日期:——
Phenylacetonitrile and 2-phenylalkanenitriles react under phase transfer catalysis conditions with 2-propenylanisoles containing electron-withdrawing substituents (or their corresponding precursors, 2-allylanisoles) via the Michael addition pathway to give substituted 4-aryl-2-phenylbutyronitriles.
Bismuth triflate catalyzed Claisen rearrangement of allyl naphthyl ethers
作者:Thierry Ollevier、Topwe M. Mwene-Mbeja
DOI:10.1016/j.tetlet.2006.03.193
日期:2006.6
Bismuth triflate was found to be an efficient catalyst for the Claisenrearrangement of allyl naphthyl ethers. The reaction proceeds smoothly with a catalytic amount of bismuth triflate (20 mol %) to afford the corresponding ortho-allyl naphthol in moderate to good yields in most cases.