Synthesis of 2-oxazolines mediated by N,N′-diisopropylcarbodiimide
摘要:
N-(beta-Hydroxy)amides can be cyclised by reaction with diisopropy1carbodiimide (DIC) to give the corresponding 2-oxazolines in high yields. The reaction requires only very mild Lewis-acid catalysis (5mol% Cu(OTf)(2)) and can be accomplished with simple heating, or in very short reaction times under microwave irradiation. (C) 2004 Elsevier Ltd. All rights reserved.
Highly efficient and enantioselective enzymatic acylation of amines in aqueous medium
作者:Dorel T Guranda、Luuk M van Langen、Fred van Rantwijk、Roger A Sheldon、Vytas K Švedas
DOI:10.1016/s0957-4166(01)00263-4
日期:2001.7
unique catalytic properties, stability and enantioselectivity of the relatively unknown penicillin acylase from Alcaligenesfaecalis has been developed for the effective and enantioselective acylation of amines in aqueousmedium. In contrast to lipase-catalyzed acylations in organic solvents, the penicillin acylase-catalyzed acylation of amines in aqueous solution is a rapid and chemoselective process
Synthesis of 2-oxazolines mediated by N,N′-diisopropylcarbodiimide
作者:Stefano Crosignani、Abigail C. Young、Bruno Linclau
DOI:10.1016/j.tetlet.2004.10.143
日期:2004.12
N-(beta-Hydroxy)amides can be cyclised by reaction with diisopropy1carbodiimide (DIC) to give the corresponding 2-oxazolines in high yields. The reaction requires only very mild Lewis-acid catalysis (5mol% Cu(OTf)(2)) and can be accomplished with simple heating, or in very short reaction times under microwave irradiation. (C) 2004 Elsevier Ltd. All rights reserved.