METHYL 5-CHLORO-2-CYANOBENZOATE

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

Procedure: To LAH (1 M/Et2O, 104.4 ml, 104.4 mmol) in anhydrous THF (300 ml) at 0° C. was added methyl 5-chloro-2-cyanobenzoate (9.28 g, 0.512 mmol) maintaining the temperature below 20° C. After one half hour, quenched at OC with water (3.97 ml), NaOH (1N, 11.9 ml, 11.9 mmol) and water (3.97 ml). A precipitate was filtered out and washed with THF. The filtrate was concentrated in vacuo and was used immediately in the next step. maintaining the temperature below 20° C After one half hour A precipitate was filtered out washed with THF The filtrate was concentrated in vacuo

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of methyl 2-bromo-5-chlorobenzoate (1.15 g, 4.6 mmol) in degassed DMF was added zinc cyanide (282 mg, 2.40 mmol) and palladium tetrakis triphenylphosphine (100 mg, 0.086 mmol) and the reaction is stirred at 90° C. over night. The reaction was partitioned between ethyl acetate and water. The organic was concentrated in vacuo and purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate). The reaction was partitioned between ethyl acetate and water The organic was concentrated in vacuo purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate)

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of methyl 2-bromo-5-chlorobenzoate from the previous step (11.5 g, 46 mmol) in degassed DMF (50 mL) was added zinc cyanide (2.82 g, 24.0 mmol) and palladium tetrakis-triphenylphosphine (1.0 g, 0.86 mmol) and the mixture was heated to 90° C. for 18 h. The reaction was partitioned between EtOAc (200 mL) and water (100 mL). The organic phase was concentrated in vacuo and the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane yielding methyl 5-chloro-2-cyanobenzoate as a white solid (8.0 g, 88% yield). TLC Rf=0.4 (15% EtOAc-hexanes); HPLC RT=3.13 min, method A; 1H NMR (CDCl3, 400 MHz) 8.13 ppm (d, 1H, J=1.83 Hz); 8.09 ppm (d, 1H, J=8.24 Hz); 7.29 ppm (dd, I H, J=8.34, 2.10 Hz); 4.02 ppm (s, 3H). The reaction was partitioned between EtOAc (200 mL) and water (100 mL) The organic phase was concentrated in vacuo the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of methyl 2-bromo-5-chlorobenzoate from the previous step (11.5 g, 46 mmol) in degassed DMF (50 mL) was added zinc cyanide (2.82 g, 24.0 mmol) and palladium tetrakis-triphenylphosphine (1.0 g, 0.86 mmol) and the mixture was heated to 90° C. for 18 h. The reaction was partitioned between EtOAc (200 mL) and water (100 mL). The organic phase was concentrated in vacuo and the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane yielding methyl 5-chloro-2-cyanobenzoate as a white solid (8.0 g, 88% yield). TLC Rf=0.4 (15% EtOAc-hexanes); HPLC RT=3.13 min, method A; 1H NMR (CDCl3, 400 MHz) 8.13 ppm (d, 1H, J=1.83 Hz); 8.09 ppm (d, 1H, J=8.24 Hz); 7.29 ppm (dd, I H, J=8.34, 2.10 Hz); 4.02 ppm (s, 3H). The reaction was partitioned between EtOAc (200 mL) and water (100 mL) The organic phase was concentrated in vacuo the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane

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

Procedure: To LAH (1 M/Et2O, 104.4 ml, 104.4 mmol) in anhydrous THF (300 ml) at 0° C. was added methyl 5-chloro-2-cyanobenzoate (9.28 g, 0.512 mmol) maintaining the temperature below 20° C. After one half hour, quenched at OC with water (3.97 ml), NaOH (1N, 11.9 ml, 11.9 mmol) and water (3.97 ml). A precipitate was filtered out and washed with THF. The filtrate was concentrated in vacuo and was used immediately in the next step. maintaining the temperature below 20° C After one half hour A precipitate was filtered out washed with THF The filtrate was concentrated in vacuo

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of methyl 2-bromo-5-chlorobenzoate (1.15 g, 4.6 mmol) in degassed DMF was added zinc cyanide (282 mg, 2.40 mmol) and palladium tetrakis triphenylphosphine (100 mg, 0.086 mmol) and the reaction is stirred at 90° C. over night. The reaction was partitioned between ethyl acetate and water. The organic was concentrated in vacuo and purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate). The reaction was partitioned between ethyl acetate and water The organic was concentrated in vacuo purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate)

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of methyl 2-bromo-5-chlorobenzoate (1.15 g, 4.6 mmol) in degassed DMF was added zinc cyanide (282 mg, 2.40 mmol) and palladium tetrakis triphenylphosphine (100 mg, 0.086 mmol) and the reaction is stirred at 90° C. over night. The reaction was partitioned between ethyl acetate and water. The organic was concentrated in vacuo and purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate). The reaction was partitioned between ethyl acetate and water The organic was concentrated in vacuo purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate)

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of methyl 2-bromo-5-chlorobenzoate (11.5 g, 46 mmol) in degassed DMF (50 mL) was added zinc cyanide (2.82 g, 24.0 mmol) and palladium tetrakis-triphenylphosphine (1.0 g, 0.86 mmol) and the mixture was heated to 90° C. for 18 h. The reaction was partitioned between EtOAc (200 mL) and water (100 mL). The organic phase was concentrated in vacuo and the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane yielding methyl 5-chloro-2-cyanobenzoate as a white solid (8.0 g, 88% yield). TLC Rf=0.4 (15% EtOAc-hexanes); HPLC RT=3.13 min (Method A); 1H NMR (CDCl3, 400 MHz) 8.13 ppm (d, 1H, J=1.83 Hz); 8.09 ppm (d, 1H, J=8.24 Hz); 7.29 ppm (dd, 1H, J=8.34, 2.10 Hz); 4.02 ppm (s, 3H). The reaction was partitioned between EtOAc (200 mL) and water (100 mL) The organic phase was concentrated in vacuo the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a stirred solution of methyl 2-bromo-5-chlorobenzoate from the previous step (11.5 g, 46 mmol) in degassed DMF (50 mL) was added zinc cyanide (2.82 g, 24.0 mmol) and palladium tetrakis-triphenylphosphine (1.0 g, 0.86 mmol) and the mixture was heated to 90° C. for 18 h. The reaction was partitioned between EtOAc (200 mL) and water (100 mL). The organic phase was concentrated in vacuo and the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane yielding methyl 5-chloro-2-cyanobenzoate as a white solid (8.0 g, 88% yield). TLC Rf=0.4 (15% EtOAc-hexanes); HPLC RT=3.13 min, method A; 1H NMR (CDCl3, 400 MHz) 8.13 ppm (d, 1H, J=1.83 Hz); 8.09 ppm (d, 1H, J=8.24 Hz); 7.29 ppm (dd, I H, J=8.34, 2.10 Hz); 4.02 ppm (s, 3H). The reaction was partitioned between EtOAc (200 mL) and water (100 mL) The organic phase was concentrated in vacuo the residue was purified by flash chromatography eluting with a gradient of 10%, 15%, 20% ethyl acetate in hexane

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

Procedure: To LAH (1 M/Et2O, 104.4 ml, 104.4 mmol) in anhydrous THF (300 ml) at 0° C. was added methyl 5-chloro-2-cyanobenzoate (9.28 g, 0.512 mmol) maintaining the temperature below 20° C. After one half hour, quenched at OC with water (3.97 ml), NaOH (1N, 11.9 ml, 11.9 mmol) and water (3.97 ml). A precipitate was filtered out and washed with THF. The filtrate was concentrated in vacuo and was used immediately in the next step. maintaining the temperature below 20° C After one half hour A precipitate was filtered out washed with THF The filtrate was concentrated in vacuo

Conditions: temp:90.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a solution of methyl 2-bromo-5-chlorobenzoate (1.15 g, 4.6 mmol) in degassed DMF was added zinc cyanide (282 mg, 2.40 mmol) and palladium tetrakis triphenylphosphine (100 mg, 0.086 mmol) and the reaction is stirred at 90° C. over night. The reaction was partitioned between ethyl acetate and water. The organic was concentrated in vacuo and purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate). The reaction was partitioned between ethyl acetate and water The organic was concentrated in vacuo purified by flash chromatography eluting a gradient to 10 to 25% ethyl acetate in hexane yielding a white solid (methyl 5-chloro-2-cyanobenzoate)