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A novel fused heterocyclic system-synthesis of substituted 9,10-dihydro-1,3,4,6,7,10-hexaazacyclohepta[de]naphthalen-8(7H)-ones

✍ Scribed by Zhijun Wang; Richard Neidlein

Book ID: 104208761
Publisher: Elsevier Science
Year: 1998
Tongue: French
Weight: 446 KB
Volume: 54
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(98)00588-2

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✦ Synopsis

4-Amino-5-chloro-2,7-bis(dimethylamino)pyrimido [4,5-d]pyrimidine (5) was prepared starting from l,l-diamino-2,2-dicyanoethylene (1) and dichloromethylenedimethylimmonium chloride (2). After reacting with ¢z-aminoacidic esters, 5 was converted into a series of new pyrimido[4,5d]pyrimidines (7), which underwent cyclization to yield substituted 9, 10-dihydro-l,3,4,6,7,10hexaazacyclohepta[de]naphthalen-8(7H)-ones (8).

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