作者:L. M. Deck、E. P. Papadopoulos、K. A. Smith
DOI:10.1002/jhet.5570400522
日期:2003.9
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
N-(氰基硫代甲酰基)邻氨基苯甲酸甲酯(1)与异氰酸酯的三乙胺催化反应导致涉及氰基的环化反应生成甲基2-(4-亚氨基-2-氧代-3-氧代-3-取代的5-硫代肟基-偶氮利丁-1 -基)苯甲酸酯(4)。当使1的S-甲基衍生物与芳族胺反应时,观察到在酯羰基处的闭环形成3-芳基-3,4-二氢-4-氧喹唑啉-线-2-腈(8)。