anti-(p-tert-butylthiacalix[4]arene*2TiCl₂)

• 英文名称: anti-(p-tert-butylthiacalix[4]arene*2TiCl₂)

反应信息

• 作为试剂：
  描述：

  1-戊炔 在 anti-(p-tert-butylthiacalix[4]arene*2TiCl₂) sodium 作用下， 以 甲苯 为溶剂， 反应 15.0h， 生成 1,2,4-tripropylbenzene 、 1,3,5-三正丙基苯
  参考文献：
  名称：

  Highly regioselective [2+2+2] cycloaddition of terminal alkynes catalyzed by titanium complexes of p-tert-butylthiacalix[4]arene

  摘要：

  Mono- and dinuclear titanium complexes of p-tert-butylthiacalix[4]arene were applied as a catalyst for [2+2+2] cycloaddition of terminal alkynes. They showed high catalytic activity and regioselectivity toward 1,3,5-trisubstituted benzenes over 1,2,4-trisubstituted isomers. The regioselectivity was rationalized in terms of the steric effect of the thiacalixarene skeleton and the coordination of the bridging Sulfur atom to the titanium center. (c) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2005.12.034