Cyclic Oxalylation of Primary N-Substituted Anthranilamides: 1H-Benzo[e][1,4]diazepine-2,3,5(4H)-triones and 11a-Chlorobenzo[ e]oxazolo[3,2-a][1,4]diazepine-2,3,5,11(10H,11aH)-tetraones
Cyclic Oxalylation of Primary N-Substituted Anthranilamides: 1H-Benzo[e][1,4]diazepine-2,3,5(4H)-triones and 11a-Chlorobenzo[ e]oxazolo[3,2-a][1,4]diazepine-2,3,5,11(10H,11aH)-tetraones