Synthesis of v-Triazolo[3,4-a]pyridines and 1,2,3-Triazoles by Diazo Group Transfer with Tosyl Azide

One-pot synthesis of imidazo[1,2-b]pyraz

One-pot synthesis of imidazo[1,2-b]pyrazole, imidazo[1,2-b]-1,2,4-triazole, imidazo[1,2-a]pyridine, imidazo[1,2-a]pyrimidine, imidazo[1,2-a]benzimidazole, and 1,2,4-triazolo[4,3-a]benzimidazole derivatives

✍ Ahmad M. Farag; Kamal M. Dawood 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 181 KB 👁 1 views

Hydrazonoyl bromides 1a-c react with 5-amino-3phenyl-1H-pyrazole, 5-amino-1H-1,2,4-triazole, 2aminopyridine, 2-aminopyrimidine, and 2-aminobenzimidazole to afford the corresponding imidazo[1,2-b]pyrazoles 10, imidazo[1,2-b]-1,2,4-triazoles 11, imidazo[1,2-a]pyridines 16, imidazo[1,2-a]pyrimidines 17