Palladium-Catalyzed Addition of Alcohol Pronucleophiles to Alkylidenecyclopropanes
作者:Drexel H. Camacho、Itaru Nakamura、Shinichi Saito、Yoshinori Yamamoto
DOI:10.1021/jo001428j
日期:2001.1.1
Palladium-catalyzedaddition of alcohol pronucleophiles 1 to alkylidenecyclopropane derivatives 2 afforded the corresponding allylic ethers 3 in excellent to moderate yields. Catalyst optimization indicated the Pd(PPh3)4-P(o-tolyl)3 combination as the best system among all catalysts tested. Intramolecular reaction also proceeded smoothly. A plausible mechanism for this catalytic reaction was proposed
Palladium-catalyzed addition of ketones to alkylidenecyclopropanes
作者:Drexel H Camacho、Itaru Nakamura、Byoung Ho Oh、Shinichi Saito、Yoshinori Yamamoto
DOI:10.1016/s0040-4039(02)00429-x
日期:2002.4
Alkylidenecyclopropanes react with ketones under neutral conditions, in the presence of a catalytic amount of Pd(PPh3)(4) to afford the corresponding alpha-allylated ketone products, in moderate to good yields. (C) 2002 Elsevier Science Ltd. All rights reserved.