An Improved Synthesis of 1,2,4-Triazoles using Ag2CO3
摘要:
An improved synthesis of 1,3,5-trisubstituted 1,2,4-triazoles via Ag2CO3 mediated cyclization of triazenes has been developed. This approach is flexible and compatible with a wide range of functional groups. The reaction was complete within 3 h and the products were isolated in moderate to high yields. The influence of the beta-substituents of the amines on the triazole formation was also studied. (C) 2000 Elsevier Science Ltd. All rights reserved.
A series of different 1,3,5-trisubstituted 1,2,4-triazoles 9 have been readily prepared by simple oxidation of corresponding N-alkylamide arylhydrazones (amidrazones) 5 with hydrogen peroxide or potassium permanganate.
Buzykin, B. I.; Bredikhina, Z. A.; Gazetdinova, N. G., Journal of general chemistry of the USSR, 1991, vol. 61, # 4.2., p. 939 - 940
作者:Buzykin, B. I.、Bredikhina, Z. A.、Gazetdinova, N. G.
DOI:——
日期:——
BUZYKIN, B. I.;BREDIXINA, Z. A.;GAZETDINOVA, N. G., ZH. OBSHCH. XIMII, 61,(1991) N, S. 1034-1035
作者:BUZYKIN, B. I.、BREDIXINA, Z. A.、GAZETDINOVA, N. G.
DOI:——
日期:——
An Improved Synthesis of 1,2,4-Triazoles using Ag2CO3
作者:K Paulvannan、Tao Chen、Ron Hale
DOI:10.1016/s0040-4020(00)00726-2
日期:2000.10
An improved synthesis of 1,3,5-trisubstituted 1,2,4-triazoles via Ag2CO3 mediated cyclization of triazenes has been developed. This approach is flexible and compatible with a wide range of functional groups. The reaction was complete within 3 h and the products were isolated in moderate to high yields. The influence of the beta-substituents of the amines on the triazole formation was also studied. (C) 2000 Elsevier Science Ltd. All rights reserved.