5-chloro-2-fluoroaniline

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

Procedure: A 1.0M solution of NaHMDS in THF (0.59 mL, 0.59 mmol) was added dropwise to a stirring solution of methyl 3-(3-{2-[(3-{[2-(dimethylamino)ethyl]oxy}phenyl)amino]-4-pyrimidinyl}imidazo[1,2-a]pyridin-2-yl)benzoate (0.100 g, 0.20 mmol) and 5-chloro-2-fluoroaniline (0.09 g, 0.59 mmol) in THF (2 mL) at rt. The reaction mixture was stirred for 0.5 h at room temperature then quenched with methanol and concentrated onto silica gel. Flash chromatography afforded the title compound (0.115 g, 94%) as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ 10.31 (s, 1H), 9.75 (s, 1H), 9.52-9.50 (m, 1H), 8.35 (d, J=5.2 Hz, 1H), 8.31 (s, 1H), 8.01 (d, J=7.7 Hz, 1H), 7.83 (d, J=7.7 Hz, 1H), 7.77-7.72 (m, 2H), 7.61-7.57 (m, 1H), 7.51-7.47 (m, 2H), 7.36-7.24 (m, 3H), 7.17-7.06 (m, 2H), 6.60 (d, J=5.3 Hz, 1H), 6.53 (dd, J=8.2, 2.4 Hz, 1H), 3.95 (t, J=5.9 Hz, 2H), 2.55 (t, J=5.7 Hz, 2H), 2.14 (s, 6H). MS (ES+, m/z) 622 (M+1). then quenched with methanol concentrated onto silica gel

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

Procedure: The title compound was synthesized according to the procedure described for the preparation of Example 188 using Compound 83 (100 mg, 0.43 mmol) and 5-chloro-2-fluoroaniline (82 mg, 0.56 mmol) to provide 205 (70 mg, 48% yield) as a white solid. LC-MS (M+H=340, obsd.=340). The title compound was synthesized

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

Procedure: The title compound was synthesized according to the procedure described for the preparation of Example 188 using Compound 83 (100 mg, 0.43 mmol) and 5-chloro-2-fluoroaniline (82 mg, 0.56 mmol) to provide 205 (70 mg, 48% yield) as a white solid. LC-MS (M+H=340, obsd.=340). The title compound was synthesized

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 5-Chloro-2-fluoroaniline (25 g, 172 mmol) was added to conc. hydrochloric acid (150 mL, 37%). The mixture was cooled (−10° C.) and a solution of sodium nitrite (11.9 g, 172 mmol) in water (193 mL) was added slowly (<−5° C.). This done, a solution of tin(II)chloride (118 g, 618 mmol) in conc. hydrochloric acid (116 mL) was added slowly (−6° C.). The mixture was stirred for 1 h, filtered through Celite® and the filter cake washed extensively with water. The filtrate was adjusted to pH 14 with conc. sodium hydroxide solution and the suspension extracted with diethylether. Organic phases were pooled, washed with brine, dried with MgSO4 and the solvent was removed in vacuo to yield the title compound as yellow solid (22.9 g, 83%), EI-MS: m/e=160.0 (M+). filtered through Celite® the filter cake washed extensively with water the suspension extracted with diethylether washed with brine dried with MgSO4 the solvent was removed in vacuo

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

Procedure: To tert-butyl 5-chloropyrazolo[1,5-a]pyrimidin-7-yl(2-morpholinopropyl)carbamate (396 mg, 1 mmol), 5-chloro-2-fluoroaniline (145 uL, 1.2 mmol), and LiHMDS (2.2 mL, 2.2 mmol, 1M in THF) was added X-Phos (11 mg, 0.024 mmol) and tris(dibenzylideneacetone)dipalladium(0) (18 mg, 0.02 mmol). The mixture was sealed and irradiated at 65° C. for 60 min in the microwave. The reaction was quenched with 1N HCL (2 mL) and then neutralized with saturated sodium bicarbonate solution. The mixture was extracted with ethyl acetate and washed with saturated sodium chloride solution. The organic layer was collected, dried over anhydrous sodium sulfate, filtered, and evaporated to dryness. The crude residue was dissolved in dichloromethane (2 mL) and trifluoroacetic acid (2 mL). After stirring at room temperature for 1 hour, the solution was concentrated under a stream of nitrogen. The crude material was neutralized with saturated sodium bicarbonate solution then purified by silica gel chromatography (75% ethyl acetate/hexanes) to yield the product, N5-(5-chloro-2-fluorophenyl)-N7-(2-morpholinopropyl)pyrazolo[1,5-a]pyrimidine-5,7-diamine (84 mg, 21% yield). LCMS (M+1=405) The mixture was sealed irradiated at 65° C. for 60 min in the microwave The reaction was quenched with 1N HCL (2 mL) The mixture was extracted with ethyl acetate washed with saturated sodium chloride solution The organic layer was collected dried over anhydrous sodium sulfate filtered evaporated to dryness The crude residue was dissolved in dichloromethane (2 mL) the solution was concentrated under a stream of nitrogen then purified by silica gel chromatography (75% ethyl acetate/hexanes)

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 5-Chloro-2-fluoroaniline (25 g, 172 mmol) was added to conc. hydrochloric acid (150 mL, 37%). The mixture was cooled (−10° C.) and a solution of sodium nitrite (11.9 g, 172 mmol) in water (193 mL) was added slowly (<-5° C.). This done, a solution of tin(II)chloride (118 g, 618 mmol) in conc. hydrochloric acid (116 mL) was added slowly (−6° C.). The mixture was stirred for 1 h, filtered through Celite® and the filter cake washed extensively with water. The filtrate was adjusted to pH 14 with conc. sodium hydroxide solution and the suspension extracted with diethylether. Organic phases were pooled, washed with brine, dried with MgSO4 and the solvent was removed in vacuo to yield the title compound as yellow solid (22.9 g, 83%), EI-MS: m/e=160.0 (M+). filtered through Celite® the filter cake washed extensively with water the suspension extracted with diethylether washed with brine dried with MgSO4 the solvent was removed in vacuo

Conditions: temp:-10.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 5-Chloro-2-fluoroaniline (25 g, 172 mmol) was added to conc. hydrochloric acid (150 mL, 37%). The mixture was cooled (−10° C.) and a solution of sodium nitrite (11.9 g, 172 mmol) in water (193 mL) was added slowly (<-5° C.). This done, a solution of tin(II)chloride (118 g, 618 mmol) in conc. hydrochloric acid (116 mL) was added slowly (−6° C.). The mixture was stirred for 1 h, filtered through Celite® and the filter cake washed extensively with water. The filtrate was adjusted to pH 14 with conc. sodium hydroxide solution and the suspension extracted with diethylether. Organic phases were pooled, washed with brine, dried with MgSO4 and the solvent was removed in vacuo to yield the title compound as yellow solid (22.9 g, 83%), EI-MS: m/e=160.0 (M+). filtered through Celite® the filter cake washed extensively with water the suspension extracted with diethylether washed with brine dried with MgSO4 the solvent was removed in vacuo

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

Procedure: A 1.0M solution of NaHMDS in THF (0.59 mL, 0.59 mmol) was added dropwise to a stirring solution of methyl 3-(3-{2-[(3-{[2-(dimethylamino)ethyl]oxy}phenyl)amino]-4-pyrimidinyl}imidazo[1,2-a]pyridin-2-yl)benzoate (0.100 g, 0.20 mmol) and 5-chloro-2-fluoroaniline (0.09 g, 0.59 mmol) in THF (2 mL) at rt. The reaction mixture was stirred for 0.5 h at room temperature then quenched with methanol and concentrated onto silica gel. Flash chromatography afforded the title compound (0.115 g, 94%) as a yellow solid. 1H NMR (400 MHz, DMSO-d6) δ 10.31 (s, 1H), 9.75 (s, 1H), 9.52-9.50 (m, 1H), 8.35 (d, J=5.2 Hz, 1H), 8.31 (s, 1H), 8.01 (d, J=7.7 Hz, 1H), 7.83 (d, J=7.7 Hz, 1H), 7.77-7.72 (m, 2H), 7.61-7.57 (m, 1H), 7.51-7.47 (m, 2H), 7.36-7.24 (m, 3H), 7.17-7.06 (m, 2H), 6.60 (d, J=5.3 Hz, 1H), 6.53 (dd, J=8.2, 2.4 Hz, 1H), 3.95 (t, J=5.9 Hz, 2H), 2.55 (t, J=5.7 Hz, 2H), 2.14 (s, 6H). MS (ES+, m/z) 622 (M+1). then quenched with methanol concentrated onto silica gel

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

Procedure: Using ethyl 7-hydroxypyrazolo[1,5-a]pyrimidine-6-carboxylate (2.0 g, 9.65 mmol) and 5-chloro-2-fluoroaniline (1.26 g, 8.69 mmol) instead of 4-fluoro-2-methylaniline, and in the same manner as in Example 1 step 1, the title compound (2.07 g, 64%) was obtained.

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

Procedure: tert-butyl 4-[(4-chloro-6-methoxyquinazolin-7-yl)oxy]piperidine-1-carboxylate was coupled with 2-fluoro-5-chloroaniline using an analogous process to that described in Example 22 (preparation of starting materials) for the preparation of N-(3-chloro-4-fluorophenyl)-6-methoxy-7-(piperidin-4-yloxy)quinazolin-4-amine hydrochloride, to give N-(5-chloro-2-fluorophenyl)-6-methoxy-7-(piperidin-4-yloxy)quinazolin-4-amine hydrochloride; 1H NMR Spectrum: (DMSO d6) 1.8-2.1 (m, 2H), 2.1-2.35 (m, 2H), 3.0-3.35 (m, 4H), 4.05 (s, 3H), 4.8-5.0 (m, 1H), 7.4-7.55 (m, 2H), 7.55-7.75 (m, 2H), 8.45 (s, 1H), 8.82 (s, 1H), 9.22 (bs, 2H), 11.94 (s, 1H); Mass Spectrum: (M+H)+ 403.

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

Procedure: A solution of 5-chloro-2-fluoroaniline (2.0 g, 13.7 mmol, 1 eq.) and potassium O-ethyl dithiocarbonate (4.8 g, 30.3 mmol, 2.2 eq) in anhydrous DMF (20 mL) was heated at 100° C. under nitrogen for 4 h. The reaction mixture was cooled to room temp., diluted with water (50 mL), and acidified with 2N HCl with constant stirring at low temperature. Yellowish solid was collected by filtration, and washed with cold water. The wet filter cake was dissolved in ethyl acetate (50 mL), and the solution was dried over sodium sulfate, filtered, and concentrated in vacuo to afford the title compound as yellowish solid. 1H-NMR (CDCl3, 300 MHz): δ=7.71 (d, J=8.1 Hz, 1H), 7.34 (d, J=8.1 Hz, 1H), 7.27 (s, 1H). The reaction mixture was cooled to room temp. Yellowish solid was collected by filtration washed with cold water The wet filter cake was dissolved in ethyl acetate (50 mL) the solution was dried over sodium sulfate filtered concentrated in vacuo

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

Procedure: 21 gm (0.065 mole) of 2-chloromethyl-8-(2-chloro-5-thiazolyl)methyl-1,4-dioxa-8-azaspiro[4,5]decane was taken in DMF (300 ml) at 28° C. To this mixture was added 28 gm of potassium carbonate, 10 gm of 5-chloro-2-fluoroaniline and the catalyst potassium iodide. The mass was kept at 140° C. for 20 hrs. The mixture was poured into ice-cooled water and the mass was extracted with ethyl acetate. The solvent was distilled off to get the dark brick red colored product with yield 85%. The mixture was poured into ice- the mass was extracted with ethyl acetate The solvent was distilled off to get the dark brick red colored product with yield 85%