One-step deprotonation route to zinc amide and ester enolates for use in aldol reactions and Negishi couplings
摘要:
Simple amides and esters are conveniently deprotonated by Zn(tmp)(2) (tmp = 2,2,6,6-tetramethylpiperidinyl anion) to generate Zn enolates. Enolates formed by this method are suitable for use in aldol reactions that tolerate base-sensitive functional groups. Additionally, the Zn enolates are readily coupled with aryl bromides using typical Pd-catalyzed coupling methods. (c) 2006 Elsevier Ltd. All rights reserved.
One-step deprotonation route to zinc amide and ester enolates for use in aldol reactions and Negishi couplings
作者:Mark L. Hlavinka、John R. Hagadorn
DOI:10.1016/j.tetlet.2006.05.093
日期:2006.7
Simple amides and esters are conveniently deprotonated by Zn(tmp)(2) (tmp = 2,2,6,6-tetramethylpiperidinyl anion) to generate Zn enolates. Enolates formed by this method are suitable for use in aldol reactions that tolerate base-sensitive functional groups. Additionally, the Zn enolates are readily coupled with aryl bromides using typical Pd-catalyzed coupling methods. (c) 2006 Elsevier Ltd. All rights reserved.