Potassium Carbonate → HCID 18956336, compound

Participants

Reaction Steps

A solution of 4,5-bis(4-methoxyphenyl)-2-mercapto-1H-imidazole (3.00 g, 9.60 mmol), 6-mercaptopurine (1.63 g, 9.60 mmol) a,a'-dibromoxylene (2.54 g, 9.60 mmol), and potassium carbonate (3.32 g, 24.0 mmol) and in 5:1 tetrahydrofuran-dimethylformamide (12 mL) was heated to reflux for 20 hours, then cooled. It was poured into ethyl acetate (150 mL), and washed with water (4×150 mL). The aqueous phases were back-extracted in sequence with ethyl acetate. The extracts were combined, dried over anhydrous magnesium sulfate, filtered and evaporated. The residual oil was separated by flash chromatography (ethyl acetate) to afford the title product as a crystalline solid, m.p. 129°-130° C. (1.64 g, 2.89 mmol, 30%). 1H NMR (CDCl3): 8.63 (1H, s); 8.02 (1H, s); 7.30 (4H, d, J=8.8 Hz); 7.23 (1H, s); 7.16 (1H, d, J=8 Hz); 6.99 (1H, t, J=8 Hz); 6.81 (1H, d, J=8 Hz); 6.71 (4H, d, J=8.8 Hz); 4.44 (2H, s); 4.02 (2H, s); 3.69 (6H, s). Elemental analysis: calculated C 63.58, H 4.62, N 14.83; observed C 63.25, H 4.55, N 14.72.

Provenance & Evidence