G. Karrick, N. Peet
Jul 1, 1986
Citations
0
Influential Citations
10
Citations
Journal
Journal of Heterocyclic Chemistry
Abstract
Recently reported [1] syntheses of 6-methyl-1,2,4,5-tetrahydro-1,4-dioxo-3H[1,2]diazepino[5,6-b]indole (5) and 4-hydroxy-6-methyl-3H[1,2]diazepino[5,6-b]indole (12) were reinvestigated and shown to be in error. The correct assignments for these respective structures are 3-amino-1,9-dihydro-9-methyl-2H-pyrido[4,3-b]indol-2,4(3H)-dione (6) and 3-amino-3,9-dihydro-9-methyl-2H-pyrido[4,3-b]indol-2-one (13). Condensation of 6 and 13 with p-nitrobenzaldehyde produced benzylidene derivatives, which confirmed the presence of the amino groups.