5-bromo-2-methyl-3H-isoindol-1-one

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

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

Procedure: A 150 mL sealed tube was charged with 4-bromo-2-(hydroxymethyl)-N-methylbenzamide (3.34 g, 13.7 mmol) and 1,3-dimethylimidazolidin-2-one (40.4 ml, 369 mmol). The solution was cooled to 0° C. and Isopropylmagnesium chloride (15.3 ml, 30.5 mmol) was added slowly. The tube was capped and the reaction mixture was stirred at room temperature for 30 minutes. This was recooled to 0° C. and N,N,N,N-tetramethylphosphorodiamidoyl chloride (2.64 ml, 17.8 mmol) was added in one portion; this mixture was stirred at room temperature for 4 hours. The tube was placed in a 150° C. oil bath for 1 hour. The mixture was then diluted with EtOAc (100 mL), then washed with 1M aqueous HCl. The aqueous layer was extracted with ethyl acetate (3×100 mL) and then the combined organics were washed with water (100 mL) and brine (100 mL), dried with MgSO4, filtered, then concentrated to give a yellow oil. This was purified by column chromatography, eluting with 1-4% MeOH/DCM to give 5-bromo-2-methylisoindolin-1-one (1.774 g, 57.3% yield) as a yellow solid. A 150 mL sealed tube The tube was capped This was recooled to 0° C. this mixture was stirred at room temperature for 4 hours was placed in a 150° C. for 1 hour washed with 1M aqueous HCl The aqueous layer was extracted with ethyl acetate (3×100 mL) the combined organics were washed with water (100 mL) and brine (100 mL) dried with MgSO4 filtered concentrated to give a yellow oil This was purified by column chromatography eluting with 1-4% MeOH/DCM

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

Procedure: A solution of methyl 4-bromo-2-(bromomethyl)benzoate (410 mmol) in MeNH2/MeOH (1500 mL) was heated to reflux and stirred for 18 h. The reaction mixture was concentrated and the residue was purified by chromatography on silica eluting with petroleum ether/ethyl acetate (6:1 to 3:1) to afford the sub-titled compound (48.5 g). to reflux The reaction mixture was concentrated the residue was purified by chromatography on silica eluting with petroleum ether/ethyl acetate (6:1 to 3:1)

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

Procedure: A 150 mL sealed tube was charged with 4-bromo-2-(hydroxymethyl)-N-methylbenzamide (3.34 g, 13.7 mmol) and 1,3-dimethylimidazolidin-2-one (40.4 ml, 369 mmol). The solution was cooled to 0° C. and Isopropylmagnesium chloride (15.3 ml, 30.5 mmol) was added slowly. The tube was capped and the reaction mixture was stirred at room temperature for 30 minutes. This was recooled to 0° C. and N,N,N,N-tetramethylphosphorodiamidoyl chloride (2.64 ml, 17.8 mmol) was added in one portion; this mixture was stirred at room temperature for 4 hours. The tube was placed in a 150° C. oil bath for 1 hour. The mixture was then diluted with EtOAc (100 mL), then washed with 1M aqueous HCl. The aqueous layer was extracted with ethyl acetate (3×100 mL) and then the combined organics were washed with water (100 mL) and brine (100 mL), dried with MgSO4, filtered, then concentrated to give a yellow oil. This was purified by column chromatography, eluting with 1-4% MeOH/DCM to give 5-bromo-2-methylisoindolin-1-one (1.774 g, 57.3% yield) as a yellow solid. A 150 mL sealed tube The tube was capped This was recooled to 0° C. this mixture was stirred at room temperature for 4 hours was placed in a 150° C. for 1 hour washed with 1M aqueous HCl The aqueous layer was extracted with ethyl acetate (3×100 mL) the combined organics were washed with water (100 mL) and brine (100 mL) dried with MgSO4 filtered concentrated to give a yellow oil This was purified by column chromatography eluting with 1-4% MeOH/DCM

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

Procedure: A 150 mL sealed tube was charged with 4-bromo-2-(hydroxymethyl)-N-methylbenzamide (3.34 g, 13.7 mmol) and 1,3-dimethylimidazolidin-2-one (40.4 ml, 369 mmol). The solution was cooled to 0° C. and Isopropylmagnesium chloride (15.3 ml, 30.5 mmol) was added slowly. The tube was capped and the reaction mixture was stirred at room temperature for 30 minutes. This was recooled to 0° C. and N,N,N,N-tetramethylphosphorodiamidoyl chloride (2.64 ml, 17.8 mmol) was added in one portion; this mixture was stirred at room temperature for 4 hours. The tube was placed in a 150° C. oil bath for 1 hour. The mixture was then diluted with EtOAc (100 mL), then washed with 1M aqueous HCl. The aqueous layer was extracted with ethyl acetate (3×100 mL) and then the combined organics were washed with water (100 mL) and brine (100 mL), dried with MgSO4, filtered, then concentrated to give a yellow oil. This was purified by column chromatography, eluting with 1-4% MeOH/DCM to give 5-bromo-2-methylisoindolin-1-one (1.774 g, 57.3% yield) as a yellow solid. A 150 mL sealed tube The tube was capped This was recooled to 0° C. this mixture was stirred at room temperature for 4 hours was placed in a 150° C. for 1 hour washed with 1M aqueous HCl The aqueous layer was extracted with ethyl acetate (3×100 mL) the combined organics were washed with water (100 mL) and brine (100 mL) dried with MgSO4 filtered concentrated to give a yellow oil This was purified by column chromatography eluting with 1-4% MeOH/DCM

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

Procedure: A solution of methyl 4-bromo-2-(bromomethyl)benzoate (410 mmol) in MeNH2/MeOH (1500 mL) was heated to reflux and stirred for 18 h. The reaction mixture was concentrated and the residue was purified by chromatography on silica eluting with petroleum ether/ethyl acetate (6:1 to 3:1) to afford the sub-titled compound (48.5 g). to reflux The reaction mixture was concentrated the residue was purified by chromatography on silica eluting with petroleum ether/ethyl acetate (6:1 to 3:1)

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

Procedure: A 150 mL sealed tube was charged with 4-bromo-2-(hydroxymethyl)-N-methylbenzamide (3.34 g, 13.7 mmol) and 1,3-dimethylimidazolidin-2-one (40.4 ml, 369 mmol). The solution was cooled to 0° C. and Isopropylmagnesium chloride (15.3 ml, 30.5 mmol) was added slowly. The tube was capped and the reaction mixture was stirred at room temperature for 30 minutes. This was recooled to 0° C. and N,N,N,N-tetramethylphosphorodiamidoyl chloride (2.64 ml, 17.8 mmol) was added in one portion; this mixture was stirred at room temperature for 4 hours. The tube was placed in a 150° C. oil bath for 1 hour. The mixture was then diluted with EtOAc (100 mL), then washed with 1M aqueous HCl. The aqueous layer was extracted with ethyl acetate (3×100 mL) and then the combined organics were washed with water (100 mL) and brine (100 mL), dried with MgSO4, filtered, then concentrated to give a yellow oil. This was purified by column chromatography, eluting with 1-4% MeOH/DCM to give 5-bromo-2-methylisoindolin-1-one (1.774 g, 57.3% yield) as a yellow solid. A 150 mL sealed tube The tube was capped This was recooled to 0° C. this mixture was stirred at room temperature for 4 hours was placed in a 150° C. for 1 hour washed with 1M aqueous HCl The aqueous layer was extracted with ethyl acetate (3×100 mL) the combined organics were washed with water (100 mL) and brine (100 mL) dried with MgSO4 filtered concentrated to give a yellow oil This was purified by column chromatography eluting with 1-4% MeOH/DCM

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

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

Procedure: Methyl 4-bromo-2-(bromomethyl)benzoate (0.153 g, 0.497 mmol) was suspended in methanamine (2M solution in MeOH, 2.484 mL, 4.97 mmol) and the mixture was heated to reflux (90° C.) for 24 hours. The reaction mixture was cooled, concentrated in vacuo, and dried under high vacuum to give the title compound (0.112 g). 1H NMR (500 MHz, CDCl3) δ ppm 3.19 (s, 3 H), 4.36 (s, 2 H), 7.57-7.62 (m, 2 H), 7.70 (d, J=8.30 Hz, 1 H); ESI-MS m/z [M+H]+ 226.3. the mixture was heated The reaction mixture was cooled concentrated in vacuo dried under high vacuum

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

Procedure: Methyl 4-bromo-2-(bromomethyl)benzoate (0.153 g, 0.497 mmol) was suspended in methanamine (2M solution in MeOH, 2.484 mL, 4.97 mmol) and the mixture was heated to reflux (90° C.) for 24 hours. The reaction mixture was cooled, concentrated in vacuo, and dried under high vacuum to give the title compound (0.112 g). 1H NMR (500 MHz, CDCl3) δ ppm 3.19 (s, 3 H), 4.36 (s, 2 H), 7.57-7.62 (m, 2 H), 7.70 (d, J=8.30 Hz, 1 H); ESI-MS m/z [M+H]+ 226.3. the mixture was heated The reaction mixture was cooled concentrated in vacuo dried under high vacuum

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

Procedure: A 150 mL scaled tube was charged with 4-bromo-2-(hydroxymethyl)-N-methylbenzamide (3.34 g, 13.7 mmol) and 1,3-dimethylimidazolidin-2-one (40.4 ml, 369 mmol). The solution was cooled to 0° C. and Isopropylmagnesium chloride (15.3 ml, 30.5 mmol) was added slowly. The tube was capped and the reaction mixture was stirred at room temperature for 30 minutes. This was recooled to 0° C. and N,N,N,N-tetramethylphosphorodiamidoyl chloride (2.64 ml, 17.8 mmol) was added in one portion; this mixture was stirred at room temperature for 4 hours. The tube was placed in a 150° C. oil bath for 1 hour. The mixture was then diluted with EtOAc (100 mL), then washed with 1M aqueous HCl. The aqueous layer was extracted with ethyl acetate (3×100 mL) and then the combined organics were washed with water (100 mL) and brine (100 mL), dried with MgSO4, filtered, then concentrated to give a yellow oil. This was purified by column chromatography, eluting with 1-4% MeOH/DCM to give 5-bromo-2-methylisoindolin-1-one (1.774 g, 57.3% yield) as a yellow solid. The tube was capped This was recooled to 0° C. this mixture was stirred at room temperature for 4 hours was placed in a 150° C. for 1 hour washed with 1M aqueous HCl The aqueous layer was extracted with ethyl acetate (3×100 mL) the combined organics were washed with water (100 mL) and brine (100 mL) dried with MgSO4 filtered concentrated to give a yellow oil This was purified by column chromatography eluting with 1-4% MeOH/DCM

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

Procedure: A 150 mL sealed tube was charged with 4-bromo-2-(hydroxymethyl)-N-methylbenzamide (3.34 g, 13.7 mmol) and 1,3-dimethylimidazolidin-2-one (40.4 ml, 369 mmol). The solution was cooled to 0° C. and Isopropylmagnesium chloride (15.3 ml, 30.5 mmol) was added slowly. The tube was capped and the reaction mixture was stirred at room temperature for 30 minutes. This was recooled to 0° C. and N,N,N,N-tetramethylphosphorodiamidoyl chloride (2.64 ml, 17.8 mmol) was added in one portion; this mixture was stirred at room temperature for 4 hours. The tube was placed in a 150° C. oil bath for 1 hour. The mixture was then diluted with EtOAc (100 mL), then washed with 1M aqueous HCl. The aqueous layer was extracted with ethyl acetate (3×100 mL) and then the combined organics were washed with water (100 mL) and brine (100 mL), dried with MgSO4, filtered, then concentrated to give a yellow oil. This was purified by column chromatography, eluting with 1-4% MeOH/DCM to give 5-bromo-2-methylisoindolin-1-one (1.774 g, 57.3% yield) as a yellow solid. A 150 mL sealed tube The tube was capped This was recooled to 0° C. this mixture was stirred at room temperature for 4 hours was placed in a 150° C. for 1 hour washed with 1M aqueous HCl The aqueous layer was extracted with ethyl acetate (3×100 mL) the combined organics were washed with water (100 mL) and brine (100 mL) dried with MgSO4 filtered concentrated to give a yellow oil This was purified by column chromatography eluting with 1-4% MeOH/DCM