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Facile Synthesis of 6-Aryl-1,3-dimethyl-5H-pyrimido[4,5-b][1,4]diazepine-2,4(1H,3H)-diones

✍ Scribed by Taghavi-Moghadam, Shahriyar; Stumpf, Rüdiger; Fischer, Helmut; Pfleiderer, Wolfgang

Book ID
121252452
Publisher
UOCHB
Year
1999
Tongue
English
Weight
134 KB
Volume
64
Category
Article
ISSN
0010-0765

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ChemInform Abstract: Facile Synthesis of
ChemInform Abstract: Facile Synthesis of 6-Aryl-1,3-dimethyl-5H-pyrimido[4,5-b][1,4]diazepine-2,4(1H,3H)-diones.
✍ Shahriyar Taghavi-Moghadam; Ruediger Stumpf; Helmut Fischer; Wolfgang Pfleiderer 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 32 KB 👁 1 views

## Facile Synthesis of 6-Aryl-1,3-dimethyl-5H-pyrimido[4,5b][1,4]diazepine-2,4(1H,3H)-diones. -A new approach to the regioselective synthesis of the title compounds (IV) starting from readily accessible 6-amino-5-benzylideneaminopyrimidines (I) is described. Condensation of compound (I) with diet

Synthesis of 4-aryl-2,3,6,7-tetrahydro-1
Synthesis of 4-aryl-2,3,6,7-tetrahydro-1H-pyrimido[4,5-b][1,4]-diazepin-6-ones from 4,5-diamino-1H-pyrimidin-6-ones and 1-aryl-3-(dimethylamino)-1-propanones
✍ Braulio Insuasty; Jairo Quiroga; Juan Carlos Argoti; Samuel Gómez; Roberto Martí 📂 Article 📅 1998 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 202 KB 👁 1 views

## Abstract The reaction of 1‐aryl‐3‐(dimethylamino)‐1‐propanones 1 with one equivalent of 4,5‐diamino‐1__H__‐pyrimidin‐6‐ones 2, in acidic medium, leads to the formation of 4‐aryl‐2,3,6,7‐tetrahydro‐1__H__‐pyrimido[4,5‐__b__]‐[1,4]diazepin‐6‐ones 3. The structure elucidation of the products is bas