反应详情

A mixture of 4-mercaptophenylboronic acid (1.0 g, 90%, 5.84 mmol), 2-bromoacetamide (1.8 g, 13 mmol) and K2CO3 (2.70 g, 19.5 mmol) in CH3CN (20 mL) was stirred at ambient temperature overnight. After CH3CN was removed, water was added to the residue, and the solid was collected via filtration and washed with water to give 0.6 g (49%) of {4-[(2-amino-2-oxoethyl)thio]phenyl}boronic acid as a white solid. The boronic acid was used without further purification. 1H NMR (400 MHz, DMSO-d6): δ 8.00 (s, 2H), 7.68 (d, 2H, J=8.2 Hz), 7.55 (bs, 1H), 7.24 (d, 2H, J=8.2 Hz), 7.15 (bs, 1H), 3.61 (s, 2H); LRMS (APCI), m/z 210 (M−H).

1. customAfter CH3CN was removed
2. additionwater was added to the residue
3. filtrationthe solid was collected via filtration
4. washwashed with water