Synthesis of 1,3,5-trisubstituted-1,2,4-triazoles by microwave-assisted N-acylation of amide derivatives and the consecutive reaction with hydrazine hydrochlorides
作者:Jongbok Lee、Myengchan Hong、Yoonchul Jung、Eun Jin Cho、Hakjune Rhee
DOI:10.1016/j.tet.2012.01.003
日期:2012.2
Facile and efficient procedures for the N-acylation reaction of amide derivatives with various acid anhydrides and the cyclization reaction of N-acylated amide derivatives with various hydrazinehydrochlorides were described. The reactions were carried out under microwave irradiation to give products in good yields in a few minutes. The synthesis of 1,3,5-trisubstituted-1,2,4-triazoles from benzamides
Oxidative Cleavage of Enamides with Hypervalent Iodine(III)/TMSN3 under an Air Atmosphere
作者:Ge Liu、Yan Li、Jie Sheng、Xi-Sheng Wang
DOI:10.1055/s-0036-1589041
日期:2017.9
tolerance, broad substrate scope and mild conditions. An oxidative cleavage of C–C double bonds of enamides promoted by hypervalentiodine(III)/TMSN3 under an air atmosphere is developed. This reaction provides a new approach to construct various cyanobenzamides, which offers further synthetic potential for the preparation of industrial and pharmaceutical nitrogen- and oxygen-containing molecules, and exhibits
Reaction of N-acetylbenzamides with hydroxylamine hydrochloride: synthesis of 3-methyl-5-aryl-1,2,4-oxadiazoles
作者:Nevin Arıkan Ölmez
DOI:10.1007/s00706-022-02975-z
日期:2022.10
A convenient reaction between N-acetylbenzamides and hydroxylamine hydrochloride at 80 °C in the presence of pyridine under microwave irradiation was described. This method leads to the formation of 3-methyl-5-aryl-1,2,4-oxadiazole compounds as regioselective in moderate to good yields and also employs simple synthetic protocols devoid of lengthy purification procedures. The reaction was also carried
描述了N-乙酰苯甲酰胺和盐酸羟胺在 80 °C 下在吡啶存在下在微波照射下的方便反应。该方法以中等至良好的收率形成区域选择性的 3-甲基-5-芳基-1,2,4-恶二唑化合物,并且还采用简单的合成方案,无需冗长的纯化程序。该反应还通过常规加热和微波照射下的一锅顺序进行。合成化合物的结构通过光谱方法进行了确认。 图形概要