2-(3-fluoro-4-methoxyphenyl)ethanamine

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: A solution of 4,6-dichloro-2-methoxypyrimidine [0.7 g, Intermediate (4)], 2-(3-fluoro-4-methoxy-phenyl)-ethylamine [0.66 g, Intermediate (3)] and sodium bicarbonate (0.88 g) in EtOH (25 mL) is heated at 80° C. for three hours and poured into water (400 mL). The resulting solid is filtered and air dried affording (6-chloro-2-methoxy-pyrimidin-4-yl)-[2-(3-fluoro-4-methoxyphenyl)-ethyl]amine [1.1 g, Intermediate (5)]. MS: 312 (M+H); 1H NMR (CDCl3): δ 6.9-7 (3H, m); 6.05 (1H, s); 3.95 (3H, s); 3.85 (3H, s); 3.6-3.7 (2H, m); 2.95 (2H, t). The resulting solid is filtered air dried

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-fluoro-1-methoxy-4-(2-nitro-vinyl)benzene (1.5 g, Intermediate (2)] in THF (50 mL) is treated dropwise with a solution of lithium aluminum hydride in ether (23 mL, 1M). The mixture is heated at 40° C. for 3 hours, cooled to room temperature, diluted with ether and quenched with Na2SO4.10H2O (104 g). After standing at room temperature overnight the reaction mixture is filtered and the filtrate is evaporated. The residue is subjected to chromatography on silica gel eluting with EtOAc to give 2-(3-fluoro-4-methoxy-phenyl)-ethylamine [0.81 g, Intermediate (3)] as an oil. MS: 170 (M+H); 1H NMR (CDCl3): 6.9-7 (3H, m); 3.85 (3H, s); 2.95 (2H, t); 2.7 (2H, t). cooled to room temperature quenched with Na2SO4.10H2O (104 g) the reaction mixture is filtered the filtrate is evaporated

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

Procedure: Intermediate 82 was dissolved in 200 mL of 48% aqueous HBr and the mixture heated to reflux for 2 hours. The Solvent was removed by rotary evaporation. The residue was taken up in 100 mL of ethanol and the solvent again removed. This was repeated twice more to remove residual water. LC-MS showed the product was >90% pure had the expected M+H+ of 156. the mixture heated to reflux for 2 hours The Solvent was removed by rotary evaporation the solvent again removed to remove residual water

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

Procedure: Lithium aluminum hydride (200 mL of 1 M in diethyl ether) was placed in a 1 L round bottomed flask along with 300 mL of diethyl ether. Intermediate 81 was placed in the thimble of a soxhlet extractor atop this flask and the mixture refluxed for 24 hours. The mixture was cooled to ° 0 C and 50 mL of ethyl acetate added dropwise. After stirring for 1 hour, the mixture was quenched with 100 mL of 1 N KHSO4. The Organic layer was separated washed with sat. NaHCO3, sat. NaCl, and dried over MgSO4. Removal of the solvent gave product. LC-MS showed the product had the expected M+H+ of 170. It was used in the next step without purification. the mixture refluxed for 24 hours The mixture was cooled added dropwise the mixture was quenched with 100 mL of 1 N KHSO4 The Organic layer was separated washed with sat. NaHCO3, sat. NaCl dried over MgSO4 Removal of the solvent gave product It was used in the next step without purification

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

Procedure: A solution of 4,6-dichloro-2-methoxypyrimidine [0.7 g, Intermediate (4)], 2-(3-fluoro-4-methoxy-phenyl)-ethylamine [0.66 g, Intermediate (3)] and sodium bicarbonate (0.88 g) in EtOH (25 mL) is heated at 80° C. for three hours and poured into water (400 mL). The resulting solid is filtered and air dried affording (6-chloro-2-methoxy-pyrimidin-4-yl)-[2-(3-fluoro-4-methoxyphenyl)-ethyl]amine [1.1 g, Intermediate (5)]. MS: 312 (M+H); 1H NMR (CDCl3): δ 6.9-7 (3H, m); 6.05 (1H, s); 3.95 (3H, s); 3.85 (3H, s); 3.6-3.7 (2H, m); 2.95 (2H, t). The resulting solid is filtered air dried

Conditions: temp:40.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A solution of 2-fluoro-1-methoxy-4-(2-nitro-vinyl)benzene (1.5 g, Intermediate (2)] in THF (50 mL) is treated dropwise with a solution of lithium aluminum hydride in ether (23 mL, 1M). The mixture is heated at 40° C. for 3 hours, cooled to room temperature, diluted with ether and quenched with Na2SO4.10H2O (104 g). After standing at room temperature overnight the reaction mixture is filtered and the filtrate is evaporated. The residue is subjected to chromatography on silica gel eluting with EtOAc to give 2-(3-fluoro-4-methoxy-phenyl)-ethylamine [0.81 g, Intermediate (3)] as an oil. MS: 170 (M+H); 1H NMR (CDCl3): 6.9-7 (3H, m); 3.85 (3H, s); 2.95 (2H, t); 2.7 (2H, t). cooled to room temperature quenched with Na2SO4.10H2O (104 g) the reaction mixture is filtered the filtrate is evaporated

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

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

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