A versatile synthesis of 2-haloalk-2(Z)-en-1-ols and 1-chloro-1(Z)-alkenes from trichloromethylcarbinols
摘要:
CrCl2 converts trichloromethylcarbinols under mild conditions to (E)-alpha-haloalkylidene chromium carbenoids which add to aldehydes or are quenched with water affording 2-haloalk-2(Z)-en-1-ols and 1-chloro-1(Z)-alkenes, respectively, in high yield. (C) 2002 Elsevier Science Ltd. All rights reserved.
Chromium Vinylidene Carbenoids: Stereospecific Synthesis of (<i>Z</i>)-2-Chloroalk-2-en-1-ols
作者:D. K. Barma、Rachid Baati、Alain Valleix、Charles Mioskowski、J. R. Falck
DOI:10.1021/ol016935h
日期:2001.12.1
[GRAPHICS](Z)-2-Chloroalk-2-en-1-ols are obtained in excellent yields from a wide variety of aldehydes by addition of (E)-chromium vinylidene carbenoids, stereospecifically generated from trichloroalkanes using CrCl2 in THF at room temperature.
Chromium Vinylidene Carbenoids: Generation, Characterization, and Reactivity. First Evidence for an Internal Proton Return Phenomenon with Vinylidene Carbenoids
作者:Rachid Baati、D. K. Barma、J. R. Falck、C. Mioskowski
DOI:10.1021/ja016515n
日期:2001.9.1
A versatile synthesis of 2-haloalk-2(Z)-en-1-ols and 1-chloro-1(Z)-alkenes from trichloromethylcarbinols
CrCl2 converts trichloromethylcarbinols under mild conditions to (E)-alpha-haloalkylidene chromium carbenoids which add to aldehydes or are quenched with water affording 2-haloalk-2(Z)-en-1-ols and 1-chloro-1(Z)-alkenes, respectively, in high yield. (C) 2002 Elsevier Science Ltd. All rights reserved.