Sulfur → HCID 15037356, compound

Participants

Reaction Steps

A mixture of 33.6 parts of ethyl 4-[[[(2-aminophenyl)amino]thioxomethyl]amino]hexahydro-1H-azepine-1-carboxylate, 26 parts of mercury(II) oxide, 0.1 parts of sulfur and 450 parts of tetrahydrofuran was stirred for 3 hours at reflux temperature. The reaction mixture was filtered while hot over diatomaceous earth and the filtrate was evaporated. The residue was boiled in acetonitrile. The product was filtered off and dried, yielding 24.5 parts (81.0%) of ethyl 4-(1H-benzimidazol-2-ylamino)hexahydro-1H-azepine-1-carboxylate; mp. 174.6° C. (compound 10).

Provenance & Evidence