1. G. M. Karp, M. A. Guaciaro, P. M. Harrington, M. C. Manfredi, P. Marc, C. O. Ortlip, L. S. Quakenbush and I. T. Szamosi, Synthesis and Herbicidal Activity of 1H-1,4-Benzodiazepine-2,5-diones; Presented at the 209th American Chemical Society National Meeting, Agrochemicals Division (AGRO 048), Anaheim CA, April 3, 1995.
2. �ber die Synthese von 1,3,4-Benzotriazepin-2,5-dionen
3. Synthesis of 3,4-dihydro-5H-1,3,4-benzotriazepin-5-ones
4. For the reaction of o-isocyanatobenzoyl chlorides with hydrazines, see: N. P. Peet and S. Sunder,
5. J. Org. Chem., 40, 1909 (1975).