Diazabicycloalkanes with nitrogen atoms in the nodal positions. 4. Intramolecular cyclization of N-(?-x-ethyl)-1,2,3,4-tetrahydroquinoxalines and behavior of benzo[b]-1,4-diazabicyclo[2.2.2]octenes in acidic media
Diazabicycloalkanes with nitrogen atoms in the nodal positions. 4. Intramolecular cyclization of N-(?-x-ethyl)-1,2,3,4-tetrahydroquinoxalines and behavior of benzo[b]-1,4-diazabicyclo[2.2.2]octenes in acidic media