Enantio- and Diastereoselective Synthesis of Cyclic β-Hydroxy Allylsilanes via Sequential Aldehyde γ-Silylallylboration and Ring-Closing Metathesis Reactions
作者:Jung-Nyoung Heo、Glenn C. Micalizio、William R. Roush
DOI:10.1021/ol034347t
日期:2003.5.1
[GRAPHICS]Highly enantioenriched cyclic allylsilanes are prepared via stereoselective gamma-silylallylboration reactions of beta- or gamma-unsaturated aldehydes followed by ring-closing metathesis.
An allylation-metathesis sequence as a convergent strategy towards enantiopure equivalents of highly functionalized cyclic dienes
作者:Laurence de Fays、Jean-Michel Adam、Léon Ghosez
DOI:10.1016/s0040-4039(03)01791-x
日期:2003.9
Highly enantioenriched equivalents of cyclic dienes have been readily prepared by asymmetric allylation of unsaturated aldehydes using a chiral allyltitanium reagent, followed by a ring-closing metathesis. The resulting beta-hydroxy allylsilanes react stereoselectively with a wide variety of electrophilic reagents. (C) 2003 Elsevier Ltd. All rights reserved.
Asymmetric synthesis of cyclic β-hydroxyallylsilanes via sequential allyltitanation-ring closing metathesis
作者:Jean-Michel Adam、Laurence de Fays、Michel Laguerre、Léon Ghosez
DOI:10.1016/j.tet.2004.05.058
日期:2004.8
Highly enantioenriched cyclic β-hydroxyallylsilanes have been prepared via enantioselective allylation of unsaturated aldehydes using a chiralallyltitaniumreagent, followed by a ring-closing metathesis. Functionalized rings of various sizes have been synthesized and the electronic effect of the silicon group in the RCM reaction has been studied. The resulting cyclic β-hydroxyallylsilanes reacted