5-chloro-1-hydroxy-3H-2,1-benzoxaborole

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was made from 18d in the same manner as compound 19b: mp 142-144° C. 1H NMR (300 MHz, DMSO-d6) δ (ppm) 4.96 (s, 2H), 7.38 (d, J=7.8 Hz, 1H), 7.49 (s, 1H), 7.71 (d, J=7.8 Hz, 1H), 9.30 (s, 1H); ESI-MS m/z 167 (M−H)−; HPLC purity 99.0%; Anal (C7H6ClO2.0.1H2O)C, H.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was made from 18d in the same manner as compound 19b: mp 142-144° C. 1H NMR (300 MHz, DMSO-d6) δ (ppm) 4.96 (s, 2H), 7.38 (d, J=7.8 Hz, 1H), 7.49 (s, 1H), 7.71 (d, J=7.8 Hz, 1H), 9.30 (s, 1H); ESI-MS m/z 167 (M−H)−; HPLC purity 99.0%; Anal (C7H6ClO2.0.1H2O)C, H.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was made from 18d in the same manner as compound 19b: mp 142-144° C. 1H NMR (300 MHz, DMSO-d6) δ (ppm) 4.96 (s, 2H), 7.38 (d, J=7.8 Hz, 1H), 7.49 (s, 1H), 7.71 (d, J=7.8 Hz, 1H), 9.30 (s, 1H); ESI-MS m/z 167 (M−H)−; HPLC purity 99.0%; Anal (C7H6ClO2.0.1H2O)C, H.

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: This compound was made from 18d in the same manner as compound 19b: mp 142-144° C. 1H NMR (300 MHz, DMSO-d6) δ (ppm) 4.96 (s, 2H), 7.38 (d, J=7.8 Hz, 1H), 7.49 (s, 1H), 7.71 (d, J=7.8 Hz, 1H), 9.30 (s, 1H); ESI-MS m/z 167 (M−H)−; HPLC purity 99.0%; Anal (C7H6ClO2.0.1H2O)C, H.