HCID 178418361, compound → HCID 178510722, compound

Participants

Reaction Steps

0.5 gm (0.00168 mol) of (E)-2-[(amino)-(2-nitrophenyl)methylene]-benzo[b]thiophen-3(2H)-one was dissolved in a mixture of 10 cc of methyl acetate and 10 cc of tetrahydrofuran, and after adding 0.5 gm of Raney nickel the mixture was hydrogenated at room temperature and a hydrogen pressure of 5 bar until hydrogen uptake was at an end. The catalyst was then filtered off, the solvent was evaporated at reduced pressure, and the residue was recrystallized twice in the presence of activated charcoal from tetrahydrofuran/petroleum ether (1:1). 330 mgm (73% of theory) of yellow crystals were obtained, m.p. 186°-187° C. (petroleum ether/tetrahydrofuran 1:1).

Provenance & Evidence