Takacs, James M.; Zhu, Jingyang; Chandramouli, Sithamalli, Journal of the American Chemical Society, 1992, vol. 114, # 2, p. 773 - 774
作者:Takacs, James M.、Zhu, Jingyang、Chandramouli, Sithamalli
DOI:——
日期:——
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
Novelnickel-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
Catalytic Palladium-Mediated Bisdiene Carbocyclizations: Bisdiene to Enediene Cycloisomerizations
作者:James M. Takacs、Francis Clement、Jingyang Zhu、Sithamalli V. Chandramouli、Xiaoping Gong
DOI:10.1021/ja962748g
日期:1997.6.1
The palladium-catalyzed cycloisomerization of acyclic bisdienes to cyclized enedienes defines a novel strategy for the stereoselective cyclization of certain unsymmetric bisdiene substrates to form functionalized five- and six-membered rings. The full details of our investigation into this novel cycloisomerization, including our observations on substrate requirements, stereoselectivity, the influence