作者:Palle J. Pedersen、Jonas Henriksen、Charlotte H. Gotfredsen、Mads H. Clausen
DOI:10.1016/j.tetlet.2008.08.043
日期:2008.10
Regio- and stereoselective hydrosilylation of terminal alkynes on solid support using diisopropyl hydrosilanes yielding β-(E)-vinyl silanes with excellent selectivity is reported. The hydrosilylation is catalyzed by Pt(DVDS)/P(iBuNCH2CH2)3N (DVDS = 1,3-divinyl-1,1,3,3-tetramethyl-disiloxane), in which the bulky proazaphosphatrane ligand plays a key role for the selectivity. The immobilized products
报道了使用二异丙基氢硅烷在固体载体上的末端炔烃的区域和立体选择性氢化硅烷化,产生具有优异选择性的β-(E)-乙烯基硅烷。氢化硅烷化反应是由Pt(DVDS)/ P(i BuNCH 2 CH 2)3 N(DVDS = 1,3- divinyl -1,1,3,3-四甲基-二硅氧烷)催化的,其中大体积的Proazaphosphatrane配体起着选择性的关键作用。固定化产物的特征在于凝胶相13 C NMR和1 H高分辨率幻角旋转NMR。