A Convenient One-Pot Synthesis of 1,5-Disubstituted Tetrazoles Containing an Amino or a Carboxy Group
作者:N. T. Pokhodylo、O. Ya. Shyyka、M. D. Obushak
DOI:10.1134/s1070428020050127
日期:2020.5
AbstractA convenient method is proposed for constructing the tetrazole ring by a one-pot reaction of amides with phosphorus oxychloride and sodium azide. A series of 1,5-disubstitutedtetrazoles containing an amino or a carboxy group, which present interest as buildings blocks for the synthesis of biologically active substances, were obtained.
Amidation and esterification of carboxylic acids with amines and phenols by N,N′-diisopropylcarbodiimide: A new approach for amide and ester bond formation in water
作者:Nadia Fattahi、Morteza Ayubi、Ali Ramazani
DOI:10.1016/j.tet.2018.06.064
日期:2018.8
abundant functional groups "ester and amide" by N,N′-diisopropylcarbodiimide (DIC) in water as a green solvent. A wide range of substrates could be employed with high functional group tolerance. The products were obtained in high yields after short reaction times. This method provides an efficient, economic, simple and very mild protocol for ester and amidebondformation in aqueous media. In addition, this