Action Des Mercaptoacetates D'alkyles Sur Les Imidates N-Cyanes, N-Acyles Et N-Ethoxycarbonyles: Synthese D'alcoxycarbonylthiazoles
作者:Khaireddine Dridi、Mohamed Lotfi El Efrit、Hedi Zantour
DOI:10.1080/10426509808545481
日期:1998.2.1
Synthese Originale de 5-Aryl (ou 5-benzyl)-2[(1-Diethoxyphosphonyl)methyl]-1,3,4-oxadiazoles par Action du Phosphonomethylhydrazide sur les Imidates <i>N</i>-Acyles
作者:Abdallah Harizi
DOI:10.1080/10426500600695047
日期:2006.10.1
The phosphonomethylhydrazide 2a reacts with N-acylated imidates 3a-d to give the corresponding 5-aryl (or 5-benzyl)-2-[(1-diethoxyphosphonyl)methyl]-1,3,4-oxadiazoles 4a-d after the elimination of ethanamide 5. Compounds 2a-e are prepared by the action of triethyl phosphonoacetate 1 with hydrazine and its derivatives. The structures of 1,3,4-oxadiazoles 4a-d and hydrazides 2a-e have been unequivocally confirmed by means of IR, H-1, C-13, P-31 NMR and mass spectrometry.