Synthesis of 2,3,4,5-tetrahydro-1H-pyrrolo[1,2-a][1,4]diazepines and 11-methyl-2,3,4,5-tetrahydro-1H-[1,4]diazepino[1,2-a]indoles - Katritzky, Alan R.; Jain, Ritu; Akhmedova, Rena; Xu, Yong-Jiang (ARKIVOC, 2003)
doi: 10.3998/ark.5550190.0004.902