methyl 4-(2-chloro-2-oxoethyl)benzoate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of aluminum trichloride (9.9 g, 74.08 mmol) in DCM (100 ml) was added S-3-methoxyphenyl ethanethioate (step 1) (4.5 g, 30.57 mmol) at 0-5° C., followed by a solution of methyl 4-(2-chloro-2-oxoethyl)benzoate (step 2) (4.5 g, crude, 24.69 mmol) in DCM (20 ml). The mixture was stirred at room temperature for 3 days. The mixture was poured carefully into icy 1 N HCl (200 ml) and extracted with EtOAc (50 ml×2). The combined organic layers were washed with water (100 ml×2) and brine (100 ml), dried with anhydrous sodium sulfate, filtered and concentrated. The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1) to afford Intermediate F as a yellow solid (1.8 g, 14%). MS (ESI): m/z 359.0 [M+1]+. extracted with EtOAc (50 ml×2) The combined organic layers were washed with water (100 ml×2) and brine (100 ml) dried with anhydrous sodium sulfate filtered concentrated The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of aluminum trichloride (9.9 g, 74.08 mmol) in DCM (100 ml) was added S-3-methoxyphenyl ethanethioate (step 1) (4.5 g, 30.57 mmol) at 0˜5° C., followed by a solution of methyl 4-(2-chloro-2-oxoethyl)benzoate (step 2) (4.5 g, crude, 24.69 mmol) in DCM (20 ml). The mixture was stirred at room temperature for 3 days. The mixture was poured carefully into icy 1 N HCl (200 ml) and extracted with EtOAc (50 ml×2). The combined organic layers were washed with water (100 ml×2) and brine (100 ml), dried with anhydrous sodium sulfate, filtered and concentrated. The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1) to afford Intermediate F as a yellow solid (1.8 g, 14%). MS (ESI): m/z 359.0 [M+1]+. extracted with EtOAc (50 ml×2) The combined organic layers were washed with water (100 ml×2) and brine (100 ml) dried with anhydrous sodium sulfate filtered concentrated The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of aluminum trichloride (9.9 g, 74.08 mmol) in DCM (100 ml) was added S-3-methoxyphenyl ethanethioate (step 1) (4.5 g, 30.57 mmol) at 0˜5° C., followed by a solution of methyl 4-(2-chloro-2-oxoethyl)benzoate (step 2) (4.5 g, crude, 24.69 mmol) in DCM (20 ml). The mixture was stirred at room temperature for 3 days. The mixture was poured carefully into icy 1 N HCl (200 ml) and extracted with EtOAc (50 ml×2). The combined organic layers were washed with water (100 ml×2) and brine (100 ml), dried with anhydrous sodium sulfate, filtered and concentrated. The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1) to afford Intermediate F as a yellow solid (1.8 g, 14%). MS (ESI): m/z 359.0 [M+1]+. extracted with EtOAc (50 ml×2) The combined organic layers were washed with water (100 ml×2) and brine (100 ml) dried with anhydrous sodium sulfate filtered concentrated The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of aluminum trichloride (9.9 g, 74.08 mmol) in DCM (100 ml) was added S-3-methoxyphenyl ethanethioate (step 1) (4.5 g, 30.57 mmol) at 0-5° C., followed by a solution of methyl 4-(2-chloro-2-oxoethyl)benzoate (step 2) (4.5 g, crude, 24.69 mmol) in DCM (20 ml). The mixture was stirred at room temperature for 3 days. The mixture was poured carefully into icy 1 N HCl (200 ml) and extracted with EtOAc (50 ml×2). The combined organic layers were washed with water (100 ml×2) and brine (100 ml), dried with anhydrous sodium sulfate, filtered and concentrated. The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1) to afford Intermediate F as a yellow solid (1.8 g, 14%). MS (ESI): m/z 359.0 [M+1]+. extracted with EtOAc (50 ml×2) The combined organic layers were washed with water (100 ml×2) and brine (100 ml) dried with anhydrous sodium sulfate filtered concentrated The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: A solution of the compound (3.0 g) obtained in Example 206a in dichloromethane (50 mL) was cooled in an ice bath, and oxalyl chloride (3.93 g) and N,N-dimethylformamide (2 drops) were added. The reaction mixture was stirred at room temperature overnight, and the solvent was evaporated under reduced pressure to give the title compound. the solvent was evaporated under reduced pressure

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of aluminum trichloride (9.9 g, 74.08 mmol) in DCM (100 ml) was added S-3-methoxyphenyl ethanethioate (step 1) (4.5 g, 30.57 mmol) at 0˜5° C., followed by a solution of methyl 4-(2-chloro-2-oxoethyl)benzoate (step 2) (4.5 g, crude, 24.69 mmol) in DCM (20 ml). The mixture was stirred at room temperature for 3 days. The mixture was poured carefully into icy 1 N HCl (200 ml) and extracted with EtOAc (50 ml×2). The combined organic layers were washed with water (100 ml×2) and brine (100 ml), dried with anhydrous sodium sulfate, filtered and concentrated. The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1) to afford Intermediate F as a yellow solid (1.8 g, 14%). MS (ESI): m/z 359.0 [M+1]+. extracted with EtOAc (50 ml×2) The combined organic layers were washed with water (100 ml×2) and brine (100 ml) dried with anhydrous sodium sulfate filtered concentrated The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1)

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a suspension of aluminum trichloride (9.9 g, 74.08 mmol) in DCM (100 ml) was added S-3-methoxyphenyl ethanethioate (step 1) (4.5 g, 30.57 mmol) at 0-5° C., followed by a solution of methyl 4-(2-chloro-2-oxoethyl)benzoate (step 2) (4.5 g, crude, 24.69 mmol) in DCM (20 ml). The mixture was stirred at room temperature for 3 days. The mixture was poured carefully into icy 1 N HCl (200 ml) and extracted with EtOAc (50 ml×2). The combined organic layers were washed with water (100 ml×2) and brine (100 ml), dried with anhydrous sodium sulfate, filtered and concentrated. The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1) to afford Intermediate F as a yellow solid (1.8 g, 14%). MS (ESI): m/z 359.0 [M+1]+. extracted with EtOAc (50 ml×2) The combined organic layers were washed with water (100 ml×2) and brine (100 ml) dried with anhydrous sodium sulfate filtered concentrated The residue was purified by column chromatography (PE/EtOAc=15/1 to 10/1)