170306-62-4Relevant articles and documents
Imidazolpyrimidoisoquinoline and Pyrimidolpyrimidoisoquinoline Ring Systems by Tandem Cyclization
Fueloep, Ferenc,Wamhoff, Heinrich,Sohar, Pal
, p. 863 - 867 (2007/10/02)
The reactions of 6,7-dialkoxy-1,2,3,4-tetrahydroisoquinoline-1-acetonitriles 3 and 4 with 2-chloroethyl and 3-chloropropyl isocyanates resulted in ureas 5-8, which were transformed with sodium methylate into the new ring systems 9,10-dimethoxy- and 9,10-diethoxy-5H-2,3,7,8,12b,13-hexahydroimidazolpyrimidoisoquinolin-5-one (9,10) and 11,12-dimethoxy- and 11,12-diethoxy-2H,6H-3,4,8,9,13b,14-hexahydropyrimidopyrimidoisoquinolin-6-one (11,12) by tandem cyclization.