Glyoxal → HCID 57161676, compound

Participants

Reaction Steps

The amidrazone hydrochloride of (b) above (200 mg) was dissolved in ethanol (2 ml). Magnesium sulphate was added (100 mg) and the mixture stirred for 30 min. Triethylamine (0.06 ml) was added followed by glyoxal (90 mg, trimeric dihydrate). This mixture was allowed to stir for 12 h. The solvent was removed in vacuo and the residue was dispersed between ethyl acetate and water. The organic layer was dried (MgSO4) and concentrated to afford a brown oil. This was purified by column chromatography on silica using hexane in ethyl acetate (95%) to afford the title compound. 1H NMR (360 MHz, CDCl3) δ1.53-1.72 (2H, m, CH2), 1.98-2.22 (2H, m, CH2), 2.42-2.53 (1H, m, NCHH), 3.14-3.22 (1H, m, NCHH), 3.61 (1H, bs, CHO), 3.74-3.81 (2H, m, NCHPh+OCHH), 4.04 (1H, d, J=12 Hz, NCHHtriazine), 4.19 (1H, d, J=12 Hz, OCHH), 4.47 (1H, d, J=12 Hz, NCHHtriazine), 7.24-7.37 (4H, m, ArH), 7.48-7.6 (4H, m, ArH), 7.70 (1H, s, ArH), 8.6 (1H, s, ArH). MS (CI+) m/z 497 (M+ +1, 100%).

Provenance & Evidence