Diheterocyclic compounds from dithiocarbamates and derivatives thereof. VII. 1-(2-benzazolylaminophenylsulphonyl)-4-[4-oxo-2-thioxo(oxo)-1,2,3,4-tetrahydro-3-quinazolinyl]benzenes

Bisheterocycles 8 with two different heterocyclic rings attached to the central benzene nucleus are readily synthesized from dithiocarbamic acid derivatives 4 or 5, using compound 1 as the starting material.