叔丁基锡烷 、 N-tosyl-N-allylpropargylamine 在
tris(dibenzylideneacetone)dipalladium (0) 作用下,
以
not given 为溶剂,
以57%的产率得到N-p-toluenesulfonyl-4-(tributylstannyl)methyl-3-(E)-(trimethylsilyl)-methylidenepyrrolidine
参考文献:
名称:
Palladium-Catalyzed Bismetallative Cyclization of Enynes
摘要:
Enynes were reacted with Me3SiSnBu3 in the presence of Pd(2)dba(3). CHCl3 or Pd(OH)(2) on charcoal to give cyclized products containing a vinylsilane moiety and a homoallyltin moiety in good yield.
Palladium-Catalyzed Bismetallative Cyclization of Enynes
作者:Miwako Mori、Tomohiro Hirose、Hideaki Wakamatsu、Noriko Imakuni、Yoshihiro Sato
DOI:10.1021/om000979x
日期:2001.5.1
Enynes were reacted with Me3SiSnBu3 in the presence of Pd(2)dba(3). CHCl3 or Pd(OH)(2) on charcoal to give cyclized products containing a vinylsilane moiety and a homoallyltin moiety in good yield.
Further studies on palladium-catalyzed bismetallative cyclization of enynes in the presence of Bu3SnSiMe3
作者:Yoshihiro Sato、Noriko Imakuni、Tomohiro Hirose、Hideaki Wakamatsu、Miwako Mori
DOI:10.1016/s0022-328x(03)00601-6
日期:2003.12
Bismetallative cyclization of enynes with Bu3SnSiMe3 catalyzed by Pd(0) complex was realized for the first time, which gives cyclized products containing a vinylsilane moiety and a homoallyltin moiety in good yield. In this cyclization, Pd-2(dba)(3)(CHCl3)-C-. or Pd(OH)2 on charcoal is effective as a Pd(0) catalyst and the addition of a phosphine ligand increased the formation of alkyne bismetallation by-product. On the other hand, it was found that a nucleophilic N-heterocyclic carbene could be utilized as a ligand for this cyclization. The utility of the cyclized products obtained from this cyclization in synthetic organic chemistry have been proven by transformation into cyclopropanol derivatives. (C) 2003 Elsevier B.V. All rights reserved.
Pd(0)-Catalyzed Bismetallative Cyclization of Enynes in the Presence of Bu3SnSiMe3 Using N-Heterocyclic Carbene as a Ligand
作者:Yoshihiro Sato、Noriko Imakuni、Miwako Mori
DOI:10.1002/adsc.200390055
日期:2003.4
ligand precursor. The cyclized products obtained from this cyclization have both a vinylsilane moiety and a homoallylstannane moiety, whose utility in synthetic organic chemistry has been proven by transformation into cyclopropanol derivatives.