Condensation and Cyclization Reactions of 2-Hydrazinobenzimidazole, -benzoxazole, and -benzothiazole
作者:M. Z. A. Badr、A. M. Mahmoud、S. A. Mahgoub、Z. A. Hozien
DOI:10.1246/bcsj.61.1339
日期:1988.4
2-Hydrazinobenzoxazole (1), -benzimidazole (2), and benzothiazole (3) were condensed with ethyl chloroformate and/or diethyl oxalate to produce, 1,2,4-triazolo- and 1,2,4-triazino-fused ketones of the title azoles respectively. Condensation of 1 and 2 with aromatic aldehydes and/or acetic anhydride produced, 3-aryl- and 3-methyl-substituted 1,2,4-triazolo-fused azoles respectively. The hydrazines 1
Electrochemical Desulfurizative Amination of Heteroaromatic Thiols by Iodine Catalysis
作者:Tingting Ran、Wei Jiang、Xin Fu、Jinguo Long、Jie Liu
DOI:10.1002/cctc.202301750
日期:——
We report that anodic oxidation of 2-iodobenzoic acid enables a hypervalent iodine (III) electrocatalysis of desulfurizative amination of heteroaromatic thiols. This protocol features broad substrate scope and wide functional group tolerance, delivering the target N-heterocyclic amines with good to excellent yields.