Chemo- and regioselective crossed alkyne cyclotrimerisation of 1,6-diynes with terminal monoalkynes mediated by Grubbs’ catalyst or Wilkinson’s catalyst
作者:Bernhard Witulski、Thomas Stengel、Jesús M. Fernández-Hernández
DOI:10.1039/b005636g
日期:——
A novel protocol for crossed alkyne cyclotrimerisations
mediated by Grubbsâ catalyst
[RuCl2(CHPh)(PCy3)2] allows the
efficient synthesis of 4,6-substituted indolines with high
regioselectivity, and it is complementary to alkyne cyclotrimerisations
mediated by Wilkinsonâs catalyst [RhCl(PPh3)3]
allowing the regioselective synthesis of the corresponding 4,5-substituted
isomers in many cases.
一种新颖的交叉炔烃环三聚化协议,由Grubbs催化剂[RuCl2(CHPh)(PCy3)2]介导,能够高效合成具有高区域选择性的4,6-取代吲哚啉,并且与由Wilkinson催化剂[RhCl(PPh3)3]介导的炔烃环三聚化互为补充,在许多情况下允许相应的4,5-取代异构体的区域选择性合成。