Rr. Gataullin et al., Cyclization of N-acetyl-ortho-cycloalkenylanilines on treatment with bromine and N-bromosuccinimide, RUSS CHEM B, 49(1), 2000, pp. 122-124
The reaction of N-acetyl-2-(cyclohex-1-enyl)aniline with Br-2 or N-bromsucc
inimide at 20 degrees C is accompanied by intramolecular cyclization to giv
e brominated 3,1-benzoxazines or 4-acetyl-(3-bromo-5-methyl-1,2,3,3a,4,8b-h
exahydrocyclopenta[b]indole.