Regioselective Platinum Catalyzed β-Hydrosilylation of Allylic Benzene Derivatives with Cyclic Siloxane D4 H
作者:Abdelghani El Malki、Abdellah Hannioui、El Mostapha Rakib、Nourredine Knouzi、Michel Vaultier
DOI:10.2174/157017811795684992
日期:2011.6.1
Conditions have been found for an efficient regioselective β-hydrosilylation of allylbenzene, 2-allyl-1- trimethylsiloxybenzene, 4-allyl-1,2-(methylenedioxy)benzene, allylpentafluorobenzene, and 4-allyl-2-methoxy-1- trimethylsiloxybenzene with D4H in the presence of Karstedts-catalyst or platinum black under mild conditions leading quantitatively to functionalized tetramethylcyclosiloxanes 3.
已发现,在温和条件下,使用Karstedts催化剂或铂黑,D4H可以高效地对烯丙基苯、2-烯丙基-1-三甲基硅氧基苯、4-烯丙基-1,2-亚甲二氧基苯、烯丙基五氟苯和4-烯丙基-2-甲氧基-1-三甲基硅氧基苯进行区域选择性的β-氢硅化反应,定量地生成功能化的四甲基环四硅氧烷3。