Catalysis by titanocene-functionalized polymer-supported dendrimers
作者:Patrick E. Berget、Jacqueline M. Teixeira、John L. Jacobsen、Neil E. Schore
DOI:10.1016/j.tetlet.2007.09.115
日期:2007.11
A series of variously-functionalized first-, second-, and third-generation dendrimers have been prepared and linked via a biphenyl core to a bis-styryl moiety suitable for use as a crosslinker in polymerization. Attachment of titanocene moieties to the first-generation system and copolymerization with styrene affords polymeric disks that exhibit catalytic properties superior to comparable solution-phase systems in a multicomponent coupling of chlorosilanes with Grignards to give bis-allylic silanes. (c) 2007 Elsevier Ltd. All rights reserved.
Catalytically active, recyclable polymeric titanocene disks: a batch-flow reactor
作者:Patrick E. Berget、Neil E. Schore
DOI:10.1016/j.tetlet.2005.10.075
日期:2005.12
Dichlorotitanocene bound within porous polystyrene disks catalyzes the Coupling of vinylmagnesium chloride and chlorosilanes to form 1,4-bis(silyl)-2-butenes. A simple batch-flow reactor permits catalyst reuse by repeated addition of fresh reagents and decantation of products. (c) 2005 Elsevier Ltd. All rights reserved.