Dimethylformamide → HCID 67440475, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 2-hydroxy-4-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-5-yloxy)benzonitrile (0.200 g, 0.749 mmol), iodoethane (0.182 mL, 2.25 mmol) and N,N-dimethylformamide (10 mL) under nitrogen balloon was put on an ice water bath. Sodium hydride (0.090 g, 2.25 mmol) was added and the mixture was stirred under nitrogen balloon at 0° C. for 15 minutes. The reaction was then stirred at room temperature for 2 hours. Water was added to quench the excess sodium hydride and the mixture was then neutralized using 1 M HCl. Water was added and the solution was extracted using ethyl acetate. The organic layer was washed with water, brine, dried over anhydrous sodium sulfate, and filtered. The solvent was removed under reduced pressure. The residue was solidified by adding isopropylether. The precipitate was filtered and dried under reduced pressure to give 2-ethoxy-4-(1-hydroxy-1,3-dihydrobenzo[c][1,2]oxaborol-5-yloxy)benzonitrile (0.131 g, 59% yield). ES(−) MS m/z=294 (M−H)−; 1H NMR (400 MHz, DMSO-d6) δ ppm 1.33 (t, J=6.9 Hz, 3H), 4.13 (q, J=7.0 Hz, 2H), 4.95 (s, 2H), 6.56 (dd, J=8.6, 1.9 Hz, 1H), 6.89 (d, J=1.9 Hz, 1H), 7.08 (dd, J=8.1, 1.6 Hz, 1H), 7.14 (s, 1H), 7.69 (d, J=8.6 Hz, 1H), 7.77 (d, J=7.8 Hz, 1H), 9.19 (s, 1H).

Provenance & Evidence