作者:Masanori Takimoto、Takashi Mizuno、Yoshihiro Sato、Miwako Mori
DOI:10.1016/j.tetlet.2005.05.129
日期:2005.8
Nickel-mediated carboxylative cyclization of alpha,omega-enyne using carbon dioxide was investigated. Oxidative cycloaddition of enynes having an electron withdrawing group on alkene to a zero-valent nickel complex smoothly proceeded to provide nickelacyclopentene intermediates, which regioselectively reacted with CO2 at the Csp(3)-nickel bond, giving cyclized carboxylation products in good yields. (c) 2005 Elsevier Ltd. All rights reserved.