Direct Zincation of Functionalized Aromatics and Heterocycles by Using a Magnesium Base in the Presence of ZnCl<sub>2</sub>
作者:Zhibing Dong、Giuliano C. Clososki、Stefan H. Wunderlich、Andreas Unsinn、Jinshan Li、Paul Knochel
DOI:10.1002/chem.200801558
日期:2009.1.2
A wide range of polyfunctional aryl and heteroaryl zinc reagents were efficiently prepared in THF by using (TMP)2Mg⋅2 LiCl (TMP=2,2,6,6‐tetramethylpiperamidyl) in the presence of ZnCl2. The possible pathways of this metalation procedure as well as possible reactive intermediates are discussed. This experimental protocol expands the tolerance of functional groups and allows an efficient zincation of
An efficient and mild ortho-zincation of aromatics and heterocycles by using TMP2Mg·2LiCl in the presence of ZnCl2
作者:Zhi-Bing Dong、Wei-Hua Zhu、Zhi-Guang Zhang、Min-Zhi Li
DOI:10.1016/j.jorganchem.2009.12.016
日期:2010.3
A variety range of functionalized aryl and heteroaryl zinc reagents were efficiently generated by using TMP2Mg center dot 2LiCl (TMP = 2,2,6,6-tetramethylpiperamidyl) in the presence of ZnCl2. The subsequently functionalization gave after reaction with electrophiles the expected polyfunctionalized products in good yields. A detailed study concerned on the point how we found the protocol and how we optimized it was depicted. (C) 2009 Elsevier B.V. All rights reserved.
[DE] BISAMID-ZINKBASEN<br/>[EN] BISAMIDE-ZINC BASES<br/>[FR] BASES DE BISAMIDE-ZINC
申请人:UNIV MUENCHEN L MAXIMILIANS
公开号:WO2008138946A1
公开(公告)日:2008-11-20
[EN] The invention relates to zinc amide bases of general formula (R1R2N)2-Zn aMgX1 [FR] L'invention concerne des bases de zinc-amide, de formule générale (R1R2N)2-Zn aMgX1 [DE] Die vorliegende Erfindung betrifft Zinkamid-Basen der allgemeinen Formel (R1R2N)2-Zn aMgX1