Sodium Carbonate → Glybuthiazol

Participants

Reaction Steps

Compound 114 (1.0 g, 2.82 mmol) was suspended in 3 N HCl (15 mL) and the suspension heated to reflux for 30 min. Following neutralization with saturated aqueous Na2CO3 solution, the precipitated product was collected by filtration, washed with water (70 mL), and dried under vacuum. The residue was crystallized from MeOH to give the product (655 mg, 2.1 mmol, 74%) as a solid, mp 220-221° C.; 1H NMR (500 MHz, DMSO) δ 1.28 (9, s), 5.91 (2, br s), 6.60 (2, d, J=7.0 Hz), 7.45 (2, d, J=7.0 Hz), 13.95 (1, br s); 13C NMR (125 MHZ, DMSO) δ 29.3, 36.0, 112.6, 127.3, 127.7, 152.5, 166.1, 166.6; MS (LCQ, ESI+) Calculated for C12H17N4O2S2 313.1, found 313.0 (M+H)+; HRMS (FAB+, m/z) Calculated for C12H17N4O2S2 313.0793, found 313.0793 (M+H)+.

Provenance & Evidence