Studies on quinolizine derivatives. XVI. The reaction of azacycl[3,3,3]azine derivatives. 9.

From the reaction of 1-azacycl [3, 3, 3] azine derivatives (I) with some dienophiles, the corresponding cycl [3, 3, 3] azine derivatives (II) and 3, 9a-dihydro-3, 9a-ethano-1-azacycl [3, 3, 3] azine derivatives (IV) were obtained.