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Preparation of benzo[c][2,7]naphthyridin-5(1H)-ones as analogs of benzopyrano[3,4-c]pyridin-5-one bronchodilators

โœ Scribed by Paul C. Unangst; David T. Connor; Mary E. Carethers; Charles S. Schwender; Richard E. Brown; Chester Puchalski


Book ID
112128259
Publisher
Journal of Heterocyclic Chemistry
Year
1986
Tongue
English
Weight
347 KB
Volume
23
Category
Article
ISSN
0022-152X

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โœ Jan M. Bakke; Hanna S. H. Gautun; Harald Svensen ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Journal of Heterocyclic Chemistry ๐ŸŒ English โš– 66 KB

## Abstract A new synthetic route to 6โ€substitutedโ€imidazo[4,5โ€__c__]pyridinโ€2โ€ons from 4โ€aminopyridine has been investigated. 4โ€Aminopyridine protected as alkyl carbamates were nitrated with dinitrogen pentoxide to the corresponding methyl, __i__โ€propyl and __t__โ€butyl 3โ€nitropyridinโ€4โ€yl carbamat