ethyl 3-(2,6-difluoro-4-hydroxyphenyl)propanoate

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: That is, to a solution of [4-[[(2-phenylethyl)(4-phenyl-1,3-thiazol-2-yl)amino]methyl]phenyl]methanol (350 mg, 0.87 mmol), ethyl 3-(2,6-difluoro-4-hydroxyphenyl)propanoate (200 mg, 0.87 mmol) and tributylphosphine (0.31 mL, 1.24 mmol) in tetrahydrofuran (30 mL) was added 1,1′-(azodicarbonyl)dipiperidine (320 mg, 1.27 mmol), and the mixture was stirred at room temperature for 18 hr. The insoluble materials were filtered off and the filtrate was concentrated. The residue was purified by silica gel column chromatography to give the title compound (300 mg, yield 56%) as a colorless oil. The insoluble materials were filtered off the filtrate was concentrated The residue was purified by silica gel column chromatography

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

Procedure: A solution of ethyl 3-(2,6-difluoro-4-methoxyphenyl)propanoate (1.17 g, 4.79 mmol), aluminum chloride (1.9 g, 14.2 mmol) and 1-octanethiol (1.7 mL, 9.80 mmol) in dichloromethane (20 mL) was stirred from under ice-cooling to room temperature for 4 hr. The reaction mixture was poured into ice water, and the mixture was stirred for 1 hr. The mixed solution was extracted with dichloromethane, washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel chromatography (ethyl acetate:hexane=1:10-1:5) to give the title compound (1.0 g, yield 91%) as a colorless oil. The mixed solution was extracted with dichloromethane washed with saturated brine dried over anhydrous magnesium sulfate concentrated under reduced pressure The obtained residue was purified by silica gel chromatography (ethyl acetate:hexane=1:10-1:5)

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

Procedure: A solution of ethyl 3-(2,6-difluoro-4-methoxyphenyl)propanoate (1.17 g, 4.79 mmol), aluminum chloride (1.9 g, 14.2 mmol) and 1-octanethiol (1.7 mL, 9.80 mmol) in dichloromethane (20 mL) was stirred from under ice-cooling to room temperature for 4 hr. The reaction mixture was poured into ice water, and the mixture was stirred for 1 hr. The mixed solution was extracted with dichloromethane, washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained residue was purified by silica gel chromatography (ethyl acetate:hexane=1:10-1:5) to give the title compound (1.0 g, yield 91%) as a colorless oil. The mixed solution was extracted with dichloromethane washed with saturated brine dried over anhydrous magnesium sulfate concentrated under reduced pressure The obtained residue was purified by silica gel chromatography (ethyl acetate:hexane=1:10-1:5)

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

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

Procedure: A solution (20 ml) of ethyl 3-(2,6-difluoro-4-methoxyphenyl)propanoate (1.17 g, 4.79 mmol), aluminum chloride (1.9 g, 14.2 mmol) and 1-octanethiol (1.7 ml, 9.80 mmol) in dichloromethane was stirred from ice-cooling to room temperature for 4 hrs. The reaction solution was poured into ice water, and the mixture was stirred for 1 hr. The mixed solution was extracted with dichloromethane, and the extract was washed with aqueous sodium chloride solution, dried over magnesium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to silica gel chromatography (ethyl acetate:hexane=1:10-1:5) to give the title compound (1.0 g) as a colorless oil. yield 91%. MS 230.9 (MH+). The mixed solution was extracted with dichloromethane the extract was washed with aqueous sodium chloride solution dried over magnesium sulfate concentrated under reduced pressure

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

Procedure: A solution (20 ml) of ethyl 3-(2,6-difluoro-4-methoxyphenyl)propanoate (1.17 g, 4.79 mmol), aluminum chloride (1.9 g, 14.2 mmol) and 1-octanethiol (1.7 ml, 9.80 mmol) in dichloromethane was stirred from ice-cooling to room temperature for 4 hrs. The reaction solution was poured into ice water, and the mixture was stirred for 1 hr. The mixed solution was extracted with dichloromethane, and the extract was washed with aqueous sodium chloride solution, dried over magnesium sulfate, and concentrated under reduced pressure. The obtained residue was subjected to silica gel chromatography (ethyl acetate:hexane=1:10-1:5) to give the title compound (1.0 g) as a colorless oil. yield 91%. MS 230.9 (MH+). The mixed solution was extracted with dichloromethane the extract was washed with aqueous sodium chloride solution dried over magnesium sulfate concentrated under reduced pressure

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

Procedure: The title compound was prepared according to the procedure described in Example 183 by coupling of (4-(cyclopent-1-en-1-yl)-2-(trifluoromethyl)thiophen-3-yl)methyl methanesulfonate and ethyl 3-(2,6-difluoro-4-hydroxyphenyl)propanoate followed by hydrolysis of ethyl 3-(4-((4-(cyclopent-1-en-1-yl)-2-(trifluoromethyl)thiophen-3-yl)methoxy)-3,5-difluorophenyl)propanoate to afford the desired product as an off-white solid. 1H NMR (400 MHz, CDCl3) δ 6.76 (d, J=7.8 Hz, 2H), 6.27 (m, 1H), 5.18 (s, 2H), 2.81 (t, J=7.5 Hz, 2H), 2.70 (m, 4H), 2.61 (m, J=7.0 Hz, 2H), 1.98 (m, 2H). The title compound was prepared

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

Procedure: The title compound was prepared according to the procedure described in Example 182 by coupling of [4-(4-methoxyphenyl)-2-(trifluoromethyl)thiophen-3-yl]methyl methanesulfonate and ethyl 3-(2,6-difluoro-4-hydroxyphenyl)propanoate followed by hydrolysis of ethyl 3-(3,5-difluoro-4-((4-(4-methoxyphenyl)-2-(trifluoromethyl)thiophen-3-yl)methoxy)phenyl)propanoate to afford the desired product as an off-white solid. 1H NMR (400 MHz, CDCl3) δ 7.58 (d, J=7.0 Hz, 2H), 7.38 (s, 1H), 6.95 (d, J=6.5 Hz, 2H), 6.72 (d, J=7.0 Hz, 1H), 5.08 (s, 2H), 3.85 (s, 3H), 2.90 (t, J=5.5 Hz, 2H), 2.66 (t, J=6.8 Hz, 2H). LCMS (ESI, M/Z) for C22H17F5O4S: 473.1 (MH+). The title compound was prepared

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

Procedure: A solution of ethyl 3-(2,6-difluoro-4-methoxyphenyl)propanoate (1.17 g, 4.79 mmol), aluminum chloride (1.9 g, 14.2 mmol) and 1-octanethiol (1.7 mL, 9.80 mmol) in dichloromethane (20 mL) was stirred for 4 hr while raising the temperature from under ice-cooling to room temperature. The reaction mixture was poured into ice water, and the mixture was stirred for 1 hr. The mixture was extracted with dichloromethane. The extract washed with aqueous sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography (ethyl acetate:hexane=1:10-1:5) to give the title compound (1.0 g, yield 91%) as a colorless oil. MS: m/z 231 (MH+). while raising the temperature from under ice- The mixture was extracted with dichloromethane The extract washed with aqueous sodium chloride solution dried over anhydrous magnesium sulfate concentrated under reduced pressure

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

Procedure: That is, to a solution of [4-[[(2-phenylethyl)(4-phenyl-1,3-thiazol-2-yl)amino]methyl]phenyl]methanol (350 mg, 0.87 mmol), ethyl 3-(2,6-difluoro-4-hydroxyphenyl)propanoate (200 mg, 0.87 mmol) and tributylphosphine (0.31 mL, 1.24 mmol) in tetrahydrofuran (30 mL) was added 1,1′-(azodicarbonyl)dipiperidine (320 mg, 1.27 mmol), and the mixture was stirred at room temperature for 18 hr. The insoluble materials were filtered off and the filtrate was concentrated. The residue was purified by silica gel column chromatography to give the title compound (300 mg, yield 56%) as a colorless oil. The insoluble materials were filtered off the filtrate was concentrated The residue was purified by silica gel column chromatography