2-Isocyanatocyclohex-1-ene-carbonitrile and 2-isocyanatobenzonitrile as bifunctional electrophiles in the synthesis of [c]-heteroanellated quinazoline derivatives

Article abstract of DOI:10.1002/ardp.19943270802

N'-substituted N-(2-cyanophenyl)ureas afford [1,2,4]triazolo[1,5-c]-and imidazo[1,2-c]-quinazolin-5(6H)-ones. 2-Isocyanatocyclohex-1-ene-carbonitrile as starting compound leads to the 7,8,9,10-saturated structural analogues.