Reactions of isocyanates with methylN-(cyanothioformyl)anthranilate

Autor: E. P. Papadopoulos, L. M. Deck, Karen Ann Smith
Rok vydání: 2003
Předmět:
Zdroj: Journal of Heterocyclic Chemistry. 40:885-893
ISSN: 1943-5193
0022-152X
DOI: 10.1002/jhet.5570400522
Popis: The triethylamine-catalyzed reactions of methyl N-(cyanothioformyl)anthranilate (1) with isocyanates result in cyclization involving the cyano group to form methyl 2-(4-imino-2-oxo-3-substituted-5-thioxoimi-dazolidin-1-yl)benzoates (4). Ring closure at the ester carbonyl to form 3-aryl-3,4-dihydro-4-oxoquinazo-line-2-carbonitriles (8) is observed when the S-methyl derivative of 1 is allowed to react with aromatic amines.
Databáze: OpenAIRE