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ChemInform Abstract: Facile Synthesis of cis-Fused 1-Benzyl/-H-5-Arylsulfonyl Pyrrolo[3,4-b]pyrroles.

✍ Scribed by Mahalingam Poornachandran; Raghavachary Raghunathan

Publisher: John Wiley and Sons
Year: 2009
Weight: 21 KB
Volume: 40
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200933122

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## 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