Ethanol → HCID 178527806, compound

Participants

Reaction Steps

5-(Piperazin-1-yl)-2-mercapto-1H-benzimidazole (7.9 g, 85%) was prepared by an analogous procedure to that described in preparation 1 (step 5) using the diamine (8.0 g, 0.04 mol) (obtained in step 2 above), carbon disulfide (3.6 g, 0.048 mol), ethanol (40 nmL) and water (4 nmL). mp 260-261° C.; IR (KBr) 3350, 1498 cm-1 ; 1H NMR (DMSO-d6) δ 2.40 (s, 1H, SH), 3.00 (t, J=4.4 Hz, 4H, N(CH2)2), 3.50 (brs, 1H, NH), 4.42 (t, J=4.5 Hz, 4H, N(CH2)2), 6.68 (s, 1H), 6.85 (d, J=8.0 Hz, 1H), 7.03 (d, J=8.4 Hz, 1H) ; Mass (m/z) 234 (M+.).

Provenance & Evidence