Reactions of isocyanates with methyl N-(
β
L. M. Deck; E. P. Papadopoulos; K. A. Smith
π
Article
π
2003
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Journal of Heterocyclic Chemistry
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English
β 77 KB
## Abstract The triethylamineβcatalyzed reactions of methyl __N__β(cyanothioformyl)anthranilate (**1**) with isocyanates result in cyclization involving the cyano group to form methyl 2β(4βiminoβ2βoxoβ3βsubstitutedβ5βthioxoimiβdazolidinβ1βyl)benzoates (**4**). Ring closure at the ester carbonyl to