Novel Catalytic CO<sub>2</sub> Incorporation Reaction: Nickel-Catalyzed Regio- and Stereoselective Ring-Closing Carboxylation of Bis-1,3-dienes
作者:Masanori Takimoto、Miwako Mori
DOI:10.1021/ja026620c
日期:2002.8.1
Novel nickel-catalyzed carboxylation of bis-1,3-dienes using carbon dioxide (CO2) was investigated. In the presence of catalytic amounts of Ni(acac)2 and PPh3, various bis-1,3-dienes smoothly reacted with CO2 and an organozinc reagent (Et2Zn, Me2Zn, or Ph2Zn) under mild conditions. This catalytic carboxylation process was accompanied by carbocyclization of bis-1,3-diene followed by alkylation by an
研究了使用二氧化碳 (CO2) 对双 1,3-二烯进行新型镍催化羧化反应。在催化量的 Ni(acac)2 和 PPh3 存在下,各种双 1,3-二烯在温和条件下与 CO2 和有机锌试剂(Et2Zn、Me2Zn 或 Ph2Zn)顺利反应。这种催化羧化过程伴随着双-1,3-二烯的碳环化,然后通过有机锌试剂进行烷基化,以高产率和高区域选择性和立体选择性提供环状羧酸衍生物。