An improved oxadiazole synthesis using peptide coupling reagents
作者:Gui-Bai Liang、Danqing D. Feng
DOI:10.1016/s0040-4039(96)01492-x
日期:1996.9
Substituted 1,2,4-oxadiazoles were synthesized in good yields in a one pot procedure by condensation of the corresponding amidoxime with carboxylic acids in the presence of a peptidecouplingreagent in diglyme, followed by heating the reaction mixture to 100°C for several hours.
One-pot synthesis of 1,2,4-oxadiazoles from carboxylic acids using 4-(dimethylamino)pyridinium acetate as efficient, regenerable, and green catalyst with ionic liquid character
A recyclable bifunctional acid–base organocatalyst with ionicliquid character has been prepared and its catalytic activity for the preparation of oxadiazoles has been investigated.
One-pot synthesis of 1,2,4-oxadiazoles from carboxylic acid esters and amidoximes using potassium carbonate
作者:Kande K.D. Amarasinghe、Matthew B. Maier、Anil Srivastava、Jeffrey L. Gray
DOI:10.1016/j.tetlet.2006.03.155
日期:2006.5
A convenient one-pot synthesis of 1,2,4-oxadiazoles is described. The condensation of carboxylic acid esters and amidoximes in the presence of potassium carbonate was employed to synthesize a variety of mono-, bis- and tris-oxadiazoles in moderate to excellent yields.
A novel synthesis of 1,2,4-oxadiazoles is described from a one-pot, three-component reaction between nitriles, hydroxylamine, and aldehydes under microwave irradiation and solvent-free conditions in excellent yields.