Regioselective Functionalization of the Thiazole Scaffold Using TMPMgCl·LiCl and TMP<sub>2</sub>Zn·2MgCl<sub>2</sub>·2LiCl
作者:Cora Dunst、Paul Knochel
DOI:10.1021/jo201250n
日期:2011.8.19
A general method for the synthesis of 2,4,5-trisubstituted thiazoles has been developed. Starting from commercially available 2-bromothiazole, successive metalations using TMPMgCl·LiCl or TMP2Zn·2MgCl2·2LiCl lead to the corresponding magnesated or zincated thiazoles which readily react with various electrophiles providing highly functionalized thiazoles.
Continuous Flow Magnesiation of Functionalized Heterocycles and Acrylates with TMPMgCl⋅LiCl
作者:Trine P. Petersen、Matthias R. Becker、Paul Knochel
DOI:10.1002/anie.201404221
日期:2014.7.21
A flow procedure for the metalation of functionalizedheterocycles (pyridines, pyrimidines, thiophenes, and thiazoles) and various acrylates using the strong, non‐nucleophilic base TMPMgCl⋅LiCl is reported. The flow conditions allow the magnesiations to be performed under more convenient conditions than the comparable batch reactions, which often require cryogenic temperatures and long reaction times