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Facile synthesis of 1,3,4-benzotriazepines and 1-arylamide-1H-indazoles via palladium-catalyzed cyclization of aryl isocyanates and aryl hydrazones under microwave irradiation

✍ Scribed by Dong, Chune; Xie, Lingli; Mou, Xiaohong; Zhong, Yashan; Su, Wei

Book ID
118218801
Publisher
Royal Society of Chemistry
Year
2010
Tongue
English
Weight
219 KB
Volume
8
Category
Article
ISSN
1477-0520

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πŸ“œ SIMILAR VOLUMES

ChemInform Abstract: Facile Synthesis of
ChemInform Abstract: Facile Synthesis of 1,3,4-Benzotriazepines and 1-Arylamide-1H-indazoles via Palladium-Catalyzed Cyclization of Aryl Isocyanates and Aryl Hydrazones under Microwave Irradiation.
✍ Chune Dong; Lingli Xie; Xiaohong Mou; Yashan Zhong; Wei Su πŸ“‚ Article πŸ“… 2011 πŸ› John Wiley and Sons βš– 34 KB

## Abstract The title compounds are prepared from bromo‐ or iodo‐aryl hydrazones, resp., under the same reaction conditions.

Synthesis of 1-aryl-1H-indazoles via the
Synthesis of 1-aryl-1H-indazoles via the palladium-catalyzed cyclization of N-aryl-Nβ€²-(o-bromobenzyl)hydrazines and [N-aryl-Nβ€²-(o-bromobenzyl)-hydrazinato-Nβ€²]-triphenylphosphonium bromides
✍ Jinhua J Song; Nathan K Yee πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 French βš– 72 KB

1-Aryl-1H-indazoles were synthesized by the palladium-catalyzed intramolecular amination [Pd(OAc) 2 /dppf/tBuONa (150 mol%)/toluene/90Β°C] of the corresponding N-aryl-N%-(o-bromobenzyl)hydrazines. It was further demonstrated that cyclization of [N-aryl-N%-(o-bromobenzyl)-hydrazinato-N%]-triphenylphos