2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene

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

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

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

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

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

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

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

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

Procedure: To a stirred suspension of sodium hydride (60% dispersion in mineral oil; 1.3 g; 0.0325 mol) in THF (60 mL) at 0° C. under N2 was added dropwise a solution of (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one (Example 17) (4.077 g; 0.013 mol) in THF (50 mL). Gas evolution was observed. The resultant mixture stirred at 0° C. for 30 min prior to addition of a solution of 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene (4.754 g; 0.013 mol) in THF (20 mL). The reaction was allowed to warm to room temperature and stirred for 14 h. The reaction was carefully quenched with H2O (15 mL) and partitioned between EtOAc (250 mL) and H2O (75 mL). The aqueous layer was extracted with EtOAc (3×100 mL). Combined organic layers were washed with brine (100 mL), dried (MgSO4), filtered and concentrated in vacuo. The residue was purified by flash chromatography (0-20% EtOAc/hexanes gradient) to afford 6.4 g (82.5%) of (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[2-iodo-5-(trifluoromethyl)benzyl]-4-methyl-1,3-oxazolidin-2-one as a white solid. LCMS=598.1 (M+1)+. 1H NMR (CDCl3, 500 MHz): δ 8.03 (d, J=8.2 Hz, 1 H), 7.90 (s, 1 H), 7.79 (s, 2 H), 7.58 (s, 1 H), 7.30 (dd, J=8.2 Hz, J=2.0 Hz, 1 H), 5.76 (d, J=8 Hz, 1 H), 4.88 (d, J=15.8 Hz, 1 H), 4.37 (d, J=15.8 Hz, 1 H), 4.09-4.02 (m, 1 H), 0.8 (d, J=6.6 Hz, 3 H). The reaction was carefully quenched with H2O (15 mL) partitioned between EtOAc (250 mL) and H2O (75 mL) The aqueous layer was extracted with EtOAc (3×100 mL) Combined organic layers were washed with brine (100 mL) dried (MgSO4) filtered concentrated in vacuo The residue was purified by flash chromatography (0-20% EtOAc/hexanes gradient)

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

Procedure: A stirred suspension of sodium hydride (60% in oil, 27 mg, 0.68 mmol) in THF (3 mL) was treated at 0° C. with (S)-4-benzyl-2-oxazolidinone (49 mg, 0.27 mmol) dissolved in THF (1 mL), under an atmosphere of N2. The reaction was stirred for 20 min and a solution of 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene (100 mg, 0.27 mmol) in THF (1 mL) was added dropwise. The reaction was stirred at room temperature for 18 h. The reaction was quenched with H2O (1 mL) and partitioned between EtOAc (80 mL) and H2O (25 mL). The aqueous phase was re-extracted with EtOAc (2×20 mL) and the combined organic extracts were washed with brine (30 mL), dried (MgSO4) and concentrated in vacuo to give the crude product. This was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient) to afford (4S)-4-benzyl-3-[2-iodo-5-(trifluoromethyl)benzyl]1,3-oxazolidin-2-one. Rf=0.45 (15% EtOAc/hexanes). LCMS 462 (M+1)+. 1H NMR (CDCl3, 500 MHz) δ 8.04 (d, J=8.2 Hz, 1H), 7.54 (br s, 1H), 7.33-7.27 (m, 5H), 7.11-7.10 (m, 2H), 7.32 (m, 1H), 4.80 (d, J=16.0 Hz, 1H), 4.49 (d, J=16.1 Hz), 4.28 (t, J=8.7 Hz, 1H), 4.25 (t, J=9.1, 4.8 Hz, 1H), 3.94 (m, 1H), 3.16 (dd, J=13.5, 4.8 Hz, 1H), 2.73 (dd, J=9.1, 4.4 Hz, 1H). The reaction was stirred at room temperature for 18 h The reaction was quenched with H2O (1 mL) partitioned between EtOAc (80 mL) and H2O (25 mL) The aqueous phase was re-extracted with EtOAc (2×20 mL) the combined organic extracts were washed with brine (30 mL) dried (MgSO4) concentrated in vacuo to give the crude product This was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient)

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

Procedure: A stirred suspension of sodium hydride (60% in oil, 27 mg, 0.68 mmol) in THF (3 mL) was treated at 0° C. with (S)-4-benzyl-2-oxazolidinone (49 mg, 0.27 mmol) dissolved in THF (1 mL), under an atmosphere of N2. The reaction was stirred for 20 min and a solution of 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene (100 mg, 0.27 mmol) in THF (1 mL) was added dropwise. The reaction was stirred at room temperature for 18 h. The reaction was quenched with H2O (1 mL) and partitioned between EtOAc (80 mL) and H2O (25 mL). The aqueous phase was re-extracted with EtOAc (2×20 mL) and the combined organic extracts were washed with brine (30 mL), dried (MgSO4) and concentrated in vacuo to give the crude product. This was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient) to afford (4S)-4-benzyl-3-[2-iodo-5-(trifluoromethyl)benzyl]1,3-oxazolidin-2-one. Rf=0.45 (15% EtOAc/hexanes). LCMS 462 (M+1)+. 1H NMR (CDCl3, 500 MHz) δ 8.04 (d, J=8.2 Hz, 1H), 7.54 (br s, 1H), 7.33-7.27 (m, 5H), 7.11-7.10 (m, 2H), 7.32 (m, 1H), 4.80 (d, J=16.0 Hz, 1H), 4.49 (d, J=16.1 Hz), 4.28 (t, J=8.7 Hz, 1H), 4.25 (t, J=9.1, 4.8 Hz, 1H), 3.94 (m, 1H), 3.16 (dd, J=13.5, 4.8 Hz, 1H), 2.73 (dd, J=9.1, 4.4 Hz, 1H). The reaction was stirred at room temperature for 18 h The reaction was quenched with H2O (1 mL) partitioned between EtOAc (80 mL) and H2O (25 mL) The aqueous phase was re-extracted with EtOAc (2×20 mL) the combined organic extracts were washed with brine (30 mL) dried (MgSO4) concentrated in vacuo to give the crude product This was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient)

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

Procedure: A stirred suspension of sodium hydride (60% in oil, 167 mg, 4.18 mmol) in THF (5 mL) was treated at 0° C. with 5-[3,5-bis(trifluoromethyl)phenyl]-1,3-oxazolidin-2-one (500 mg, 1.67 mmol) dissolved in THF (1 mL), under an atmosphere of N2. The reaction was stirred for 20 min and a solution of 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene (610 mg, 1.67 mmol) in THF (1 mL) was added dropwise. The reaction was stirred at room temperature for 18 h. The reaction was quenched with H2O (1 mL) and partitioned between EtOAc (80 mL) and H2O (25 mL). The aqueous phase was re-extracted with EtOAc (2×20 mL) and the combined organic extracts were washed with brine (30 mL), dried (MgSO4) and concentrated in vacuo to give the crude product. This was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient) to afford 5-[3,5-bis(trifluoromethyl)phenyl]-3-[2-iodo-5-(trifluoromethyl)benzyl]1,3-oxazolidin-2-one. Rf=0.55 (515% EtOAc/hexanes). LCMS 584 (M+1)+. 1H NMR (CDCl3, 500 MHz) δ 8.05 (d, J=8.2 Hz, 1H), 7.95 (br s, 1H), 7.85 (br s, 2H), 7.51 (br s, 1H), 7.32 (m, 1H), 5.72 (t, J=8.0 Hz, 1 H), 4.74 (d, J=15.5 Hz, 1H), 4.64 (d, J=15.3 Hz), 4.14 (t, J=7.1 Hz, 1H), 3.47 (dd, J=7.1, 1.6 Hz). The reaction was stirred at room temperature for 18 h The reaction was quenched with H2O (1 mL) partitioned between EtOAc (80 mL) and H2O (25 mL) The aqueous phase was re-extracted with EtOAc (2×20 mL) the combined organic extracts were washed with brine (30 mL) dried (MgSO4) concentrated in vacuo to give the crude product This was purified by flash silica-gel chromatography (0-30% EtOAc in hexanes gradient)

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

Procedure: (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one (400 mg, 1.28 mmol) was treated with NaH (60% in oil, 128 mg, 3.2 mmol) and 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene (Example 70, 466 mg, 1.28 mmol) as described in Example 66 to afford (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-[2-iodo-5-(trifluoromethyl)benzyl]-4-methyl-1,3-oxazolidin-2-one as a white solid. LCMS=598.0 (M+1)+. 1H NMR (CDCl3, 500 MHz): δ 8.06 (d, J=8.2 Hz, 1H), 7.93 (s, 1H), 7.82 (s, 2H), 7.61 (s, 1H), 7.33 (dd, J=8.2, 1.4 Hz, 1H), 5.79 (d, J=7.8 hz, 1H), 4.91 (d, J=16 Hz, 1H), 4.40 (d, J=16 Hz, 1H), 4.16-4.06 (m, 1H), 0.83 (d, J=6.4 Hz, 3H).