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Bischler–Napieralski cyclocondensation in the synthesis of new 11H-pyrimido[4,5-b][1,4]benzodiazepines

✍ Scribed by Justo Cobo; Manuel Nogueras; John N. Low; Ricaurte Rodríguez

Book ID
111713825
Publisher
Elsevier Science
Year
2008
Tongue
French
Weight
304 KB
Volume
49
Category
Article
ISSN
0040-4039

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✍ Jinbao Xiang; Lianyou Zheng; Tong Zhu; Qun Dang; Xu Bai 📂 Article 📅 2010 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 126 KB

## Abstract magnified image A series of tricyclic 7,8,10,11‐tetrahydro‐5__H__‐benzo[__e__]pyrimido[4,5‐__b__][1,4]diazepin‐9(6__H__)‐ones were prepared in moderate to high yields using TFA‐promoted iminium‐cyclization reactions of 3‐(6‐(butylamino)‐4‐chloropyrimidin‐5‐ylamino)cyclohex‐2‐enones and