2-(2-chloro-4-cyano-5-methoxyphenyl)ethyl methanesulfonate

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-(2-chloro-4-cyano-5-methoxyphenyl)ethyl methanesulfonate (274 mg, 0.945 mmol) in DCM (4 mL) was treated with DBU (0.712 mL, 4.73 mmol) and stirred for 3 hours at 50° C., then at RT for 12 hours. TLC (50% ethyl acetate/hexanes) showed complete conversion to a faster intense UV band for the product. The reaction was then diluted with DCM and aq. citric acid and the mixture was extracted twice with DCM. The organic layers were washed with brine, dried over sodium sulfate and concentrated in vacuo. Purification of the residue by flash chromatography (10-20% ethyl acetate/hexanes) afforded the title intermediate. at RT for 12 hours the mixture was extracted twice with DCM The organic layers were washed with brine dried over sodium sulfate concentrated in vacuo Purification of the residue by flash chromatography (10-20% ethyl acetate/hexanes)

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

Procedure: A solution of 2-(2-chloro-4-cyano-5-methoxyphenyl)ethanol (205 mg, 0.969 mmol) DIPEA (0.846 mL, 4.84 mmol) and pyridine (0.0780 mL, 0.969 mmol) in DCM (3 mL) was treated dropwise with mesyl chloride (0.110 mL, 1.42 mmol). The reaction was stirred for 2 hours and was then diluted with DCM and washed twice with aq. citric acid, then washed with brine, and dried over sodium sulfate. Purification of the residue by flash chromatography (20-50% ethyl acetate/hexanes) afforded the title intermediate. 1H-NMR (500 MHz, CDCl3) δ ppm 2.99 (s, 3H), 3.24 (t, J=6.6 Hz, 2H), 3.95 (s, 3H), 4.49 (t, J=6.6 Hz, 2H), 6.962 (s, 1H), 7.563 (s, 1H). washed twice with aq. citric acid washed with brine dried over sodium sulfate Purification of the residue by flash chromatography (20-50% ethyl acetate/hexanes)

Conditions: temp:50.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-(2-chloro-4-cyano-5-methoxyphenyl)ethyl methanesulfonate (274 mg, 0.945 mmol) in DCM (4 mL) was treated with DBU (0.712 mL, 4.73 mmol) and stirred for 3 hours at 50° C., then at RT for 12 hours. TLC (50% ethyl acetate/hexanes) showed complete conversion to a faster intense UV band for the product. The reaction was then diluted with DCM and aq. citric acid and the mixture was extracted twice with DCM. The organic layers were washed with brine, dried over sodium sulfate and concentrated in vacuo. Purification of the residue by flash chromatography (10-20% ethyl acetate/hexanes) afforded the title intermediate. at RT for 12 hours the mixture was extracted twice with DCM The organic layers were washed with brine dried over sodium sulfate concentrated in vacuo Purification of the residue by flash chromatography (10-20% ethyl acetate/hexanes)

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

Procedure: A solution of 2-(2-chloro-4-cyano-5-methoxyphenyl)ethanol (205 mg, 0.969 mmol) DIPEA (0.846 mL, 4.84 mmol) and pyridine (0.0780 mL, 0.969 mmol) in DCM (3 mL) was treated dropwise with mesyl chloride (0.110 mL, 1.42 mmol). The reaction was stirred for 2 hours and was then diluted with DCM and washed twice with aq. citric acid, then washed with brine, and dried over sodium sulfate. Purification of the residue by flash chromatography (20-50% ethyl acetate/hexanes) afforded the title intermediate. 1H-NMR (500 MHz, CDCl3) δ ppm 2.99 (s, 3H), 3.24 (t, J=6.6 Hz, 2H), 3.95 (s, 3H), 4.49 (t, J=6.6 Hz, 2H), 6.962 (s, 1H), 7.563 (s, 1H). washed twice with aq. citric acid washed with brine dried over sodium sulfate Purification of the residue by flash chromatography (20-50% ethyl acetate/hexanes)