E. Le Gall et al., Synthesis of [1,2-b] and [2,1-b]quinazoline ring systems via suitably substituted alpha-cyanoamines, SYNLETT, (9), 1999, pp. 1383-1386
A novel entry into tetrahydro-6H-isoquino[1,2-b] quinazoline and hexahydro-
5aH-pyrido[2, 1-b]quinazoline ring systems is outlined employing 1,2,3,4-te
trahydroisoquinoline and piperidine as starting material. The anodic cyanat
ion of N-substituted aliphatic amines constitute the key step of the synthe
sis of the quinazolines 3 and 9.