K. Lee, J. Kim, Mun Ki Hong
Sep 1, 1999
Citations
0
Influential Citations
6
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
The reaction of 1-aminoethylidenehydrazones 9 with di-tert-butyl dicarbonate and 4-dimethylaminopyridine led to the corresponding azinoisocyanates 10, which underwent thermal rearrangement under the reaction conditions to give 4-(tert-butoxycarbonyl)-5-methyl-2H-1,2,4-triazol-3(4H)-ones 14. However, amidrazone 17 gave 2-(2-tert-butoxycarbonyloxy-2-phenyl)ethyl-4-(tert-butoxycarbonyl)-5-methyl-2H-1,2,4-triazol-3(4H)-one 22 and N-aziridinyliminocarbamate 18 under the similar conditions.