2-bromo-N,N-dimethylethanamine;hydrobromide

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-(6-Chloro-1H-indazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide (80 mg, 0.16 mmol) was combined with DMF (8 mL) at 0° C. to give a yellow solution. Sodium hydride (60% in mineral oil, 19 mg, 0.47 mmol) was added and the reaction was stirred at 0° C. for 10 min. Dimethylaminoethyl bromide hydrobromide (54 mg, 0.23 mmol) was added and the reaction was stirred at 0° C. for 30 min, then allowed to warm to room temperature and stirred for 2 h. The reaction mixture was quenched with 5 mL of brine and 10 mL of water, then extracted with ethyl acetate (2×30 mL). The combined organic layers were washed with water and brine, then dried and concentrated in vacuo. The crude material was purified by silica gel chromatography (0-10% methanol in dichloromethane) to afford 50 mg (55%) of 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide as a foaming solid. MS: (M+H)+=587. to give a yellow solution the reaction was stirred at 0° C. for 30 min to warm to room temperature stirred for 2 h The reaction mixture was quenched with 5 mL of brine and 10 mL of water extracted with ethyl acetate (2×30 mL) The combined organic layers were washed with water and brine dried concentrated in vacuo The crude material was purified by silica gel chromatography (0-10% methanol in dichloromethane)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-(6-Chloro-1H-indazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide (80 mg, 0.16 mmol) was combined with DMF (8 mL) at 0° C. to give a yellow solution. Sodium hydride (60% in mineral oil, 19 mg, 0.47 mmol) was added and the reaction was stirred at 0° C. for 10 min. Dimethylaminoethyl bromide hydrobromide (54 mg, 0.23 mmol) was added and the reaction was stirred at 0° C. for 30 min, then allowed to warm to room temperature and stirred for 2 h. The reaction mixture was quenched with 5 mL of brine and 10 mL of water, then extracted with ethyl acetate (2×30 mL). The combined organic layers were washed with water and brine, then dried and concentrated in vacuo. The crude material was purified by silica gel chromatography (0-10% methanol in dichloromethane) to afford 50 mg (55%) of 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide as a foaming solid. MS: (M+H)+=587. to give a yellow solution the reaction was stirred at 0° C. for 30 min to warm to room temperature stirred for 2 h The reaction mixture was quenched with 5 mL of brine and 10 mL of water extracted with ethyl acetate (2×30 mL) The combined organic layers were washed with water and brine dried concentrated in vacuo The crude material was purified by silica gel chromatography (0-10% methanol in dichloromethane)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a 10 mL pear-shaped flask, 2-(6-chloro-1H-indazol-3-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide (280 mg, 0.48 mmol) was combined with DMF (8 ml) at 0° C. to give a yellow solution. Sodium hydride (60% in mineral oil, 70 mg, 1.74 mmol) was added and the reaction was stirred at 0° C. for 10 min. Dimethylaminoethyl bromide hydrobromide (169 mg, 0.73 mmol) was added and the reaction was stirred at 0° C. for 30 min then allowed to warm up to room temperature and stirred for 2 h. The reaction was quenched with 5 ml of brine and 10 ml of water then extracted with EtOAc (2×). The combined organics were washed with water and brine then dried and purified by SiO2 chromatography (0% to 10% MeOH/CH2Cl2 to isolate 135 mg (43%) of 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide as a foaming solid. MS: (M+H)+=651. to give a yellow solution the reaction was stirred at 0° C. for 30 min to warm up to room temperature stirred for 2 h The reaction was quenched with 5 ml of brine and 10 ml of water then extracted with EtOAc (2×) The combined organics were washed with water and brine then dried purified by SiO2 chromatography (0% to 10% MeOH/CH2Cl2

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a 10 mL pear-shaped flask, 2-(6-chloro-1H-indazol-3-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide (280 mg, 0.48 mmol) was combined with DMF (8 ml) at 0° C. to give a yellow solution. Sodium hydride (60% in mineral oil, 70 mg, 1.74 mmol) was added and the reaction was stirred at 0° C. for 10 min. Dimethylaminoethyl bromide hydrobromide (169 mg, 0.73 mmol) was added and the reaction was stirred at 0° C. for 30 min then allowed to warm up to room temperature and stirred for 2 h. The reaction was quenched with 5 ml of brine and 10 ml of water then extracted with EtOAc (2×). The combined organics were washed with water and brine then dried and purified by SiO2 chromatography (0% to 10% MeOH/CH2Cl2 to isolate 135 mg (43%) of 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide as a foaming solid. MS: (M+H)+=651. to give a yellow solution the reaction was stirred at 0° C. for 30 min to warm up to room temperature stirred for 2 h The reaction was quenched with 5 ml of brine and 10 ml of water then extracted with EtOAc (2×) The combined organics were washed with water and brine then dried purified by SiO2 chromatography (0% to 10% MeOH/CH2Cl2

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a cooled (−78° C.) solution of benzothiophene (74.5 mmol) in anhydrous THF (100 mL) was added slowly n-BuLi (82 mmol, 1.6 M in hexanes). The mixture was stirred at −78° C. for 1 hr. β-Dimethylaminoethyl bromide hydrobromide (41 mmol) was added at −78° C. and the temperature was allowed to reach 0° C. over 5 hours. The mixture was quenched in sat. NH4Cl, the pH of the aqueous layer was adjusted to 7-8 with sat. NaHCO3, and the mixture was extracted with EtOAc (4×). The combined organic layers were concentrated and extracted with 1N HCl (3×). The combined HCl layers were made basic with sat. NaHCO3, extracted with EtOAc (4×), and the combined organic layers were washed with brine, dried over MgSO4, filtered and concentrated in vacuo to afford Compound 1a (2-Benzo[b]thiophen-2-yl-ethyl)-dimethyl-amine (4.96 g, 65%) as a tan solid; MS (MH+)=206. to reach 0° C. over 5 hours The mixture was quenched in sat. NH4Cl the mixture was extracted with EtOAc (4×) The combined organic layers were concentrated extracted with 1N HCl (3×) extracted with EtOAc (4×) the combined organic layers were washed with brine dried over MgSO4 filtered concentrated in vacuo

Conditions: temp:-78.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: To a cooled (−78° C.) solution of benzothiophene (74.5 mmol) in anhydrous THF (100 mL) was added slowly n-BuLi (82 mmol, 1.6 M in hexanes). The mixture was stirred at −78° C. for 1 hr. β-Dimethylaminoethyl bromide hydrobromide (41 mmol) was added at −78° C. and the temperature was allowed to reach 0° C. over 5 hours. The mixture was quenched in sat. NH4Cl, the pH of the aqueous layer was adjusted to 7-8 with sat. NaHCO3, and the mixture was extracted with EtOAc (4×). The combined organic layers were concentrated and extracted with 1N HCl (3×). The combined HCl layers were made basic with sat. NaHCO3, extracted with EtOAc (4×), and the combined organic layers were washed with brine, dried over MgSO4, filtered and concentrated in vacuo to afford Compound 1a (2-Benzo[b]thiophen-2-yl-ethyl)-dimethyl-amine (4.96 g, 65%) as a tan solid; MS (MH+)=206. to reach 0° C. over 5 hours The mixture was quenched in sat. NH4Cl the mixture was extracted with EtOAc (4×) The combined organic layers were concentrated extracted with 1N HCl (3×) extracted with EtOAc (4×) the combined organic layers were washed with brine dried over MgSO4 filtered concentrated in vacuo

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 2-(6-Chloro-1H-indazol-3-yl)-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide (80 mg, 0.16 mmol) was combined with DMF (8 mL) at 0° C. to give a yellow solution. Sodium hydride (60% in mineral oil, 19 mg, 0.47 mmol) was added and the reaction was stirred at 0° C. for 10 min. Dimethylaminoethyl bromide hydrobromide (54 mg, 0.23 mmol) was added and the reaction was stirred at 0° C. for 30 min, then allowed to warm to room temperature and stirred for 2 h. The reaction mixture was quenched with 5 mL of brine and 10 mL of water, then extracted with ethyl acetate (2×30 mL). The combined organic layers were washed with water and brine, then dried and concentrated in vacuo. The crude material was purified by silica gel chromatography (0-10% methanol in dichloromethane) to afford 50 mg (55%) of 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanyl-ethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid ((S)-2-methoxy-1-methyl-ethyl)-amide as a foaming solid. MS: (M+H)+=587. to give a yellow solution the reaction was stirred at 0° C. for 30 min to warm to room temperature stirred for 2 h The reaction mixture was quenched with 5 mL of brine and 10 mL of water extracted with ethyl acetate (2×30 mL) The combined organic layers were washed with water and brine dried concentrated in vacuo The crude material was purified by silica gel chromatography (0-10% methanol in dichloromethane)

Conditions: temp:0.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: In a 10 mL pear-shaped flask, 2-(6-chloro-1H-indazol-3-yl)-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide (280 mg, 0.48 mmol) was combined with DMF (8 ml) at 0° C. to give a yellow solution. Sodium hydride (60% in mineral oil, 70 mg, 1.74 mmol) was added and the reaction was stirred at 0° C. for 10 min. Dimethylaminoethyl bromide hydrobromide (169 mg, 0.73 mmol) was added and the reaction was stirred at 0° C. for 30 min then allowed to warm up to room temperature and stirred for 2 h. The reaction was quenched with 5 ml of brine and 10 ml of water then extracted with EtOAc (2×). The combined organics were washed with water and brine then dried and purified by SiO2 chromatography (0% to 10% MeOH/CH2Cl2 to isolate 135 mg (43%) of 2-[6-chloro-1-(2-dimethylamino-ethyl)-1H-indazol-3-yl]-5-(2-trimethylsilanylethoxymethyl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxylic acid [(R)-2-(3-cyano-azetidin-1-yl)-1-methyl-2-oxo-ethyl]-amide as a foaming solid. MS: (M+H)+=651. to give a yellow solution the reaction was stirred at 0° C. for 30 min to warm up to room temperature stirred for 2 h The reaction was quenched with 5 ml of brine and 10 ml of water then extracted with EtOAc (2×) The combined organics were washed with water and brine then dried purified by SiO2 chromatography (0% to 10% MeOH/CH2Cl2

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

Procedure: At rt and under N2, to a solution of 2-(3-nitrophenyl)-1H-imidazole (0.189 g, 1.00 mmol) and (2-bromoethyl)dimethylamine hydrobromide (0.280 g, 1.20 mmol) in anhydrous DMF (5 mL) was added NaH (60% in mineral oil, 160 mg, 4.0 mmol) in two portions with caution. The mixture was stirred at rt for 15 h. Water (0.3 mL) was added cautiously to quench the reaction. Solvent was removed in vacuo, and the residue was purified by silica gel chromatography (5% MeOH in dichloromethane) to afford the title compound. 1H-NMR (CDCl3, 400 MHz): δ=2.24 (s, 6H), 2.69 (t, J=7.2 Hz, 2H), 4.13 (d, J=6.8 Hz, 2H), 7.17 (d, J=1.2 Hz, 1H), 7.19 (d, J=1.2 Hz, 1H), 7.65 (t, J=8.0 Hz, 1H), 8.04(dt, J=0.8, 8.0 Hz, 1H), 8.28 (dq, J=1.2, 8.4 Hz, 1H), 8.56 (t, J=1.6 Hz, 1H). MS (ES+): m/z 261.17 [MH+]. HPLC: tR=0.46 min (ZQ2000, polar—5 min). to quench the reaction Solvent was removed in vacuo the residue was purified by silica gel chromatography (5% MeOH in dichloromethane)

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

Procedure: At rt and under N2, to a solution of 2-(3-nitrophenyl)-1H-imidazole (0.189 g, 1.00 mmol) and (2-bromoethyl)dimethylamine hydrobromide (0.280 g, 1.20 mmol) in anhydrous DMF (5 mL) was added NaH (60% in mineral oil, 160 mg, 4.0 mmol) in two portions with caution. The mixture was stirred at rt for 15 h. Water (0.3 mL) was added cautiously to quench the reaction. Solvent was removed in vacuo, and the residue was purified by silica gel chromatography (5% MeOH in dichloromethane) to afford the title compound. 1H-NMR (CDCl3, 400 MHz): δ=2.24 (s, 6H), 2.69 (t, J=7.2 Hz, 2H), 4.13 (d, J=6.8 Hz, 2H), 7.17 (d, J=1.2 Hz, 1H), 7.19 (d, J=1.2 Hz, 1H), 7.65 (t, J=8.0 Hz, 1H), 8.04(dt, J=0.8, 8.0 Hz, 1H), 8.28 (dq, J=1.2, 8.4 Hz, 1H), 8.56 (t, J=1.6 Hz, 1H). MS (ES+): m/z 261.17 [MH+]. HPLC: tR=0.46 min (ZQ2000, polar—5 min). to quench the reaction Solvent was removed in vacuo the residue was purified by silica gel chromatography (5% MeOH in dichloromethane)

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

Procedure: At rt and under N2, to a solution of 2-(3-nitrophenyl)-1H-imidazole (0.189 g, 1.00 mmol) and (2-bromoethyl)dimethylamine hydrobromide (0.280 g, 1.20 mmol) in anhydrous DMF (5 mL) was added NaH (60% in mineral oil, 160 mg, 4.0 mmol) in two portions with caution. The mixture was stirred at rt for 15 h. Water (0.3 mL) was added cautiously to quench the reaction. Solvent was removed in vacuo, and the residue was purified by silica gel chromatography (5% MeOH in dichloromethane) to afford the title compound. 1H-NMR (CDCl3, 400 MHz): δ=2.24 (s, 6H), 2.69 (t, J=7.2 Hz, 2H), 4.13 (d, J=6.8 Hz, 2H), 7.17 (d, J=1.2 Hz, 1H), 7.19 (d, J=1.2 Hz, 1H), 7.65 (t, J=8.0 Hz, 1H), 8.04(dt, J=0.8, 8.0 Hz, 1H), 8.28 (dq, J=1.2, 8.4 Hz, 1H), 8.56 (t, J=1.6 Hz, 1H). MS (ES+): m/z 261.17 [MH+]. HPLC: tR=0.46 min (ZQ2000, polar—5 min). to quench the reaction Solvent was removed in vacuo the residue was purified by silica gel chromatography (5% MeOH in dichloromethane)

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

Procedure: The title compound was prepared following the same procedure for the synthesis of compound 5G using compound 5F and 2-bromo-N,N-dimethylethanamine hydrobromide as starting material. 1H NMR (400 MHz, MeOD) δ 8.57 (s, 1 H) 7.68 (m, 2H) 7.33 (t, J=8.36 Hz, 1 H) 5.78 (s, 1 H) 4.51 (t, J=4.0 Hz, 2 H) 3.69 (s, 3 H) 3.66 (t, J=8.0 Hz, 2 H) 3.09 (s, 6 H). [M+H] calc'd for C18H19FIN5O2, 484; found, 484.