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ChemInform Abstract: Regiospecific Synthesis of 3H-Pyrido[2,3-b][1,4]diazepin-4(5H)-ones (III) via Haloform Reaction with the Isolation of N3-[3-Oxo-4,4,4-trichloroalk-1-en-1-yl]-2,3-diaminopyridine Intermediates (IV).

✍ Scribed by Helio G. Bonacorso; Rogerio V. Lourega; Liliane M. F. Porte; Everton D. Deon; Nilo Zanatta; Alex F. C. Flores; Marcos A. P. Martins

Publisher
John Wiley and Sons
Year
2009
Weight
24 KB
Volume
40
Category
Article
ISSN
0931-7597

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✦ Synopsis

Abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a β€œFull Text” option. The original article is trackable via the β€œReferences” option.

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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