M. Boulouard et al., PYRROLOTHIENO[1,4]DIAZEPINES .3. SYNTHESIS OF AMINO, HYDRAZINO AND MERCAPTO DERIVATIVES, Journal of heterocyclic chemistry, 33(1), 1996, pp. 87-91
Treatment of -(2-formyl-1H-pyrrol-1-yl)-3-thiophenecarbonitrile by sod
ium percarbonate afforded, in a one-pot sequence and on a multigram sc
ale, 4H-pyrrolo[1,2-a]thieno-[3,2-f][1,4]diazepin-4-one whose reactivi
ty towards various nucleophiles like amines, hydrazines and thiols was
evaluated.