(2,6-dichloro-3-methoxyphenyl)methanol

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: Bromination of (2,6-dichloro-3-methoxyphenyl)methanol with 30% HBr in acetic acid, followed by reaction of the crude bromide with triphenylphosphine, using the procedure described in example 112, except that the reaction time for the displacement was 36 h, gave the phosphonium salt (526) (97%) as a white solid, mp (CH2Cl2/benzene) 242–244° C. 1H NMR (CDCl3) δ 7.83–7.60 (m, 15H), 7.15 (dd, J=9.1, 0.8 Hz, 1H), 6.88 (dd, J=9.0, 2.4 Hz, 1H), 5.41 (d, J=14.3 Hz, 2H), 3.84 (s, 3H). Found: C, 58.68; H, 4.16. C26H22BrCl2OP requires C, 58.67; H, 4.17.

Conditions: temp:0.00; pressure:0.00; stir:

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

Procedure: Bromination of (2,6-dichloro-3-methoxyphenyl)methanol with 30% HBr in acetic acid, followed by reaction of the crude bromide with triphenylphosphine, using the procedure described in example 112, except that the reaction time for the displacement was 36 h, gave the phosphonium salt (526) (97%) as a white solid, mp (CH2Cl2/benzene) 242–244° C. 1H NMR (CDCl3) δ 7.83–7.60 (m, 15H), 7.15 (dd, J=9.1, 0.8 Hz, 1H), 6.88 (dd, J=9.0, 2.4 Hz, 1H), 5.41 (d, J=14.3 Hz, 2H), 3.84 (s, 3H). Found: C, 58.68; H, 4.16. C26H22BrCl2OP requires C, 58.67; H, 4.17.

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

Procedure: Dissolve (2,6-dichloro-3-methoxy-phenyl)-methanol (9.43 g, 45.5 mmol) in methylene chloride (180 ml) cool to 0° and add phosphorus tribromide (1.0M, 23 ml, 23 mmol) dropwise. Stir for 10 minutes at 0°, dilute with methylene chloride, quench with saturated aqueous sodium bicarbonate, separate layers, wash organic with water, brine dry over sodium sulfate, filter and concentrate to yield 7 g (57%) of the title compound: NMR (CDCl3) δ 7.28 (d, 1H), 6.85 (d, 1H), 4.77 (s, 2H), 3.90 (s, 3H). cool to 0° quench with saturated aqueous sodium bicarbonate separate layers wash organic with water, brine dry over sodium sulfate filter concentrate

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

Procedure: Dissolve 2,6-dichloro-3-methoxy-benzaldehyde (10 g, 48.8 mmol) in ethanol (330 ml) add sodiumborohydride (1.8 g, 48.8 mmol) and stir at room temperature over night. Partition reaction mixture between water and ethyl acetate separate layers wash organic with brine, dry over sodium sulfate, filter and concentrate to yield 9.43 g (93%) of (2,6-Dichloro-3-methoxy-phenyl)-methanol. Partition reaction mixture between water and ethyl acetate separate layers wash organic with brine dry over sodium sulfate filter concentrate

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

Procedure: Dissolve 2,6-dichloro-3-methoxy-benzaldehyde (10 g, 48.8 mmol) in ethanol (330 ml) add sodiumborohydride (1.8 g, 48.8 mmol) and stir at room temperature over night. Partition reaction mixture between water and ethyl acetate separate layers wash organic with brine, dry over sodium sulfate, filter and concentrate to yield 9.43 g (93%) of (2,6-Dichloro-3-methoxy-phenyl)-methanol. Partition reaction mixture between water and ethyl acetate separate layers wash organic with brine dry over sodium sulfate filter concentrate

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

Procedure: Dissolve 2,6-dichloro-3-methoxy-benzaldehyde (10 g, 48.8 mmol) in ethanol (330 ml) add sodiumborohydride (1.8 g, 48.8 mmol) and stir at room temperature over night. Partition reaction mixture between water and ethyl acetate separate layers wash organic with brine, dry over sodium sulfate, filter and concentrate to yield 9.43 g (93%) of (2,6-Dichloro-3-methoxy-phenyl)-methanol. Partition reaction mixture between water and ethyl acetate separate layers wash organic with brine dry over sodium sulfate filter concentrate

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

Procedure: Bromination of (2,6-dichloro-3-methoxyphenyl)methanol with 30% HBr in acetic acid, followed by reaction of the crude bromide with triphenylphosphine, using the procedure described in example 112, except that the reaction time for the displacement was 36 h, gave the phosphonium salt (526) (97%) as a white solid, mp (CH2Cl2/benzene) 242–244° C. 1H NMR (CDCl3) δ 7.83–7.60 (m, 15H), 7.15 (dd, J=9.1, 0.8 Hz, 1H), 6.88 (dd, J=9.0, 2.4 Hz, 1H), 5.41 (d, J=14.3 Hz, 2H), 3.84 (s, 3H). Found: C, 58.68; H, 4.16. C26H22BrCl2OP requires C, 58.67; H, 4.17.