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Paper | Regular issue | Vol 26, No. 9, 1987, pp.2469-2475
Published online, 1st January, 1970
DOI: 10.3987/R-1987-09-2469
An Unexpected Reaction between 2,3-Dihydro-2,2,4-trimethyl-1H-1,5-benzodiazepine and Mercaptoacetic Acid

Alba Chimirri, Silvana Grasso, Rosaria Ottanà, Giovanni Romeo, Gionanni Valle, and Maria Zappalà

*Dipartimento Farmaco-Chimico, Università di Messina, Viale Annunziata, 98168 Messina, Italy


The reaction of 2,3-dihydro-2,2,4-trimethyl-1H-1,5-benzodiazepine with mercaptoacetic acid gave two unexpected main derivatives 2,3-dihydro-4-(2,3,4,5-tetrehydro-2,2-dimethyl-4-oxo-3-thienyl)-2,2-dimethly-1H-1,5- benzodiazepine and 1,1-dimethyl-1H,3H-thiazolo[3,4-a]benzimidazole. The structures of obtained compounds have been assigned by means of spectroscopic measurements. A mechanism for their formation is also suggested.