Reactions of isocyanates with methylN-(cyanothioformyl)anthranilate
Autor: | E. P. Papadopoulos, L. M. Deck, Karen Ann Smith |
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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 |
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