Highly Efficient One-Pot Preparation of 1,2,4-Oxadiazoles in the Presence of Diazabicycloundecene
作者:Kirill Lukin、Vimal Kishore
DOI:10.1002/jhet.1689
日期:2014.1
New highlyefficient method for the cyclization of acylamidoximes in the presence of diazabicycloundecene was developed and incorporated into a general and practical one‐pot synthesis of 1,2,4‐oxadiazoles (11 examples, 85–97% yields).
Parallel synthesis of 1,2,4-oxadiazoles using CDI activation
作者:Tracy L Deegan、Theodore J Nitz、Diane Cebzanov、Denise E Pufko、John A Porco
DOI:10.1016/s0960-894x(98)00712-4
日期:1999.1
1,2,4-Oxadiazoles have been prepared in parallel using 1,1'-carbonyldiimidazole (CDI) as a reagent for both formation and cyclodehydration of O-acyl benzamidoximes. The use of CDI facilitates parallel purification of the oxadiazole products by simple liquid-liquid extraction and filtration. (C) 1999 Elsevier Science Ltd. All rights reserved.