tert-butyl N-[3-(bromomethyl)phenyl]carbamate

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

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

Procedure: 3-Nitro-1H-pyrazole (prepared in example 3, 595 mg, 5.26 mmol) was dissolved in anhydrous N,N-dimethylformamide (10 mL) and a 60% dispersion of sodium hydride in mineral oil (211 mg, 5.28 mmol) was added while stirring under nitrogen. After the effervescence ceased and the reaction stirred for an additional 25 min, the reaction was chilled to 0° C. and (3-bromomethyl-phenyl)-carbamic acid tert-butyl ester (1.50 g, 5.26 mmol) was added. The reaction continued to stir under nitrogen at 0° C. for 20 min. The reaction was diluted with ethyl acetate (200 mL), washed with water (2×50 mL), saturated aqueous brine solution (2×20 mL), dried over magnesium sulfate and concentrated in vacuo to give a yellow oil. Purification by flash column (Merck silica gel 60, 40-63 μm; 15% ethyl acetate/hexanes) followed by recrystallization from methylene chloride afforded [3-(3-nitro-pyrazol-1-ylmethyl)-phenyl]-carbamic acid tert-butyl ester (782 mg, 47%) as a beige solid: H1-NMR (400 MHz, DMSO-d6) δ 1.45 (9H, s), 5.39 (2H, s), 6.88 (1H, d, J=7.6 Hz), 7.06 (1H, d, J=2.4 Hz), 7.22 (1H, t, J=8.0 Hz), 7.35 (1H, d, J=8.0 Hz), 7.40 (1H, s), 8.11 (1H, d, J=2.8 Hz), 9.36 (1H, s). the reaction stirred for an additional 25 min to stir under nitrogen at 0° C. for 20 min washed with water (2×50 mL), saturated aqueous brine solution (2×20 mL) dried over magnesium sulfate concentrated in vacuo to give a yellow oil Purification by flash column (Merck silica gel 60, 40-63 μm; 15% ethyl acetate/hexanes) followed by recrystallization from methylene chloride

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

Procedure: The (3-hydroxymethyl-phenyl)-carbamic acid tert-butyl ester (1.67 g, 7.49 mmol) and triphenylphosphine (2.61 g, 9.96 mmol) were combined and dissolved in tetrahydrofuran (40 mL). Carbon tetrabromide (3.23 g, 9.74 mmol) was dissolved in acetonitrile (20 mL) and added dropwise to the reaction while stirring. After stirring for 5 h, the reaction was concentrated in vacuo to give a thick golden oil. Purification by flash column chromatography (Merck silica gel 60, 40-63 μm; 20% ethyl acetate/hexanes) afforded (3-bromomethyl-phenyl)-carbamic acid tert-butyl ester (1.52 g, 78%) as a white powder: H1-NMR (400 MHz, CDCl3) δ 1.53 (9H, s), 4.46 (2H, s), 6.47 (1H, bs), 7.06 (1H, d, J=7.2 Hz), 7.19-7.27 (2H, m), 7.51 (1H, s). added dropwise to the reaction After stirring for 5 h the reaction was concentrated in vacuo to give a thick golden oil Purification by flash column chromatography (Merck silica gel 60, 40-63 μm; 20% ethyl acetate/hexanes)

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

Procedure: The (3-hydroxymethyl-phenyl)-carbamic acid tert-butyl ester (1.67 g, 7.49 mmol) and triphenylphosphine (2.61 g, 9.96 mmol) were combined and dissolved in tetrahydrofuran (40 mL). Carbon tetrabromide (3.23 g, 9.74 mmol) was dissolved in acetonitrile (20 mL) and added dropwise to the reaction while stirring. After stirring for 5 h, the reaction was concentrated in vacuo to give a thick golden oil. Purification by flash column chromatography (Merck silica gel 60, 40-63 μm; 20% ethyl acetate/hexanes) afforded (3-bromomethyl-phenyl)-carbamic acid tert-butyl ester (1.52 g, 78%) as a white powder: H1-NMR (400 MHz, CDCl3) δ 1.53 (9H, s), 4.46 (2H, s), 6.47 (1H, bs), 7.06 (1H, d, J=7.2 Hz), 7.19-7.27 (2H, m), 7.51 (1H, s). added dropwise to the reaction After stirring for 5 h the reaction was concentrated in vacuo to give a thick golden oil Purification by flash column chromatography (Merck silica gel 60, 40-63 μm; 20% ethyl acetate/hexanes)

Conditions: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: A mixture of 1-(5-(1H-tetrazol-5-yl)-3,4-dihydroquinolin-1(2H)-yl)-4-(2,3-dimethylphenoxy)butan-1-one (0.16 g, 0.409 mmol), tert-butyl 3-(bromomethyl)phenylcarbamate (0.152 g, 0.531 mmol) and K2CO3 (0.113 g, 0.817 mmol) in DMF (1 mL) was stirred at 80° C. for 16 h. The mixture was partitioned between EtOAc and water. The organic layer was separated, washed with water and brine, dried over anhydrous MgSO4, filtered, and concentrated in vacuo to provide the crude material. The crude material was purified by flash chromatography (0-50% ethyl acetate:hexanes) to afford the title compound (96 mg, 40% yield). LCMS, [M+H]+=597.4. The mixture was partitioned between EtOAc and water The organic layer was separated washed with water and brine dried over anhydrous MgSO4 filtered concentrated in vacuo to provide the crude material The crude material was purified by flash chromatography (0-50% ethyl acetate:hexanes)

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

Procedure: The title compound was prepared using a procedure analogous to 1-(5-(1-(3-aminobenzyl)-1H-pyrazol-4-yl)-3,4-dihydroquinolin-1(2H)-yl)-4-(2,3-dimethylphenoxy)butan-1-one except that tert-butyl 3-(bromomethyl)phenylcarbamate was replaced with tert-butyl 3-(1-bromoethyl)phenylcarbamate. LCMS, [M+H]+=509.5.

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

Procedure: To a solution of 4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (0.88 g, 4.54 mmol) in acetonitrile (20 mL) was added cesium carbonate (4.43 g, 13.61 mmol) and tert-butyl 3-(bromomethyl)phenylcarbamate (1.298 g, 4.54 mmol). The reaction was stirred at room temperature for 3 h. After this time, the reaction mixture was diluted with ethyl acetate and washed with water and brine. The aqueous phase was extracted with CHCl3. The combined organic layer was dried over anhydrous MgSO4, filtered, and concentrated. The resulting residue was purified by (0-100% ethyl acetate:hexanes) to afford the title compound (1.06 g, 2.65 mmol, 59% yield) as a colorless oil. LCMS, [M+H]+=400.3. washed with water and brine The aqueous phase was extracted with CHCl3 The combined organic layer was dried over anhydrous MgSO4 filtered concentrated The resulting residue was purified by (0-100% ethyl acetate:hexanes)

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

Procedure: The title compound was prepared from tert-butyl[3-(bromomethyl)phenyl]carbamate (0.42 g, 1.48 mmol) and methyl 1-oxo-1,2-dihydroisoquinoline-7-carboxylate (0.20 g, 0.98 mmol) following the procedure outlined in Example 3, step 1 (0.31 g, 77%). LC-MS: (FA) ES+ 409.

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

Procedure: To a solution of tert-butyl[3-(hydroxymethyl)phenyl]carbamate (0.90 g, 4.0 mmol) in dichloromethane (15 mL) cooled at 0° C. was added triphenylphosphine (1.59 g, 6.05 mmol) and carbon tetrabromide (2.01 g, 6.05 mmol) and the reaction was stirred at rt overnight. The reaction was quenched with water and extracted with DCM (2×). The combined organic phases were then washed with water, and brine, dried over anhydrous Na2SO4, filtered and concentrated. The residue was purified by flash silica gel chromatography (0% to 20% EtOAc/hexanes) to afford tert-butyl[3-(bromomethyl)phenyl]carbamate (0.82 g, 70%). LC-MS: (FA) ES+ 271. The reaction was quenched with water extracted with DCM (2×) The combined organic phases were then washed with water, and brine dried over anhydrous Na2SO4 filtered concentrated The residue was purified by flash silica gel chromatography (0% to 20% EtOAc/hexanes)

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

Procedure: 3-Nitro-1H-pyrazole (prepared in example 3, 595 mg, 5.26 mmol) was dissolved in anhydrous N,N-dimethylformamide (10 mL) and a 60% dispersion of sodium hydride in mineral oil (211 mg, 5.28 mmol) was added while stirring under nitrogen. After the effervescence ceased and the reaction stirred for an additional 25 min, the reaction was chilled to 0° C. and (3-bromomethyl-phenyl)-carbamic acid tert-butyl ester (1.50 g, 5.26 mmol) was added. The reaction continued to stir under nitrogen at 0° C. for 20 min. The reaction was diluted with ethyl acetate (200 mL), washed with water (2×50 mL), saturated aqueous brine solution (2×20 mL), dried over magnesium sulfate and concentrated in vacuo to give a yellow oil. Purification by flash column (Merck silica gel 60, 40-63 μm; 15% ethyl acetate/hexanes) followed by recrystallization from methylene chloride afforded [3-(3-nitro-pyrazol-1-ylmethyl)-phenyl]-carbamic acid tert-butyl ester (782 mg, 47%) as a beige solid: H1-NMR (400 MHz, DMSO-d6) δ 1.45 (9H, s), 5.39 (2H, s), 6.88 (1H, d, J=7.6 Hz), 7.06 (1H, d, J=2.4 Hz), 7.22 (1H, t, J=8.0 Hz), 7.35 (1H, d, J=8.0 Hz), 7.40 (1H, s), 8.11 (1H, d, J=2.8 Hz), 9.36 (1H, s). the reaction stirred for an additional 25 min to stir under nitrogen at 0° C. for 20 min washed with water (2×50 mL), saturated aqueous brine solution (2×20 mL) dried over magnesium sulfate concentrated in vacuo to give a yellow oil Purification by flash column (Merck silica gel 60, 40-63 μm; 15% ethyl acetate/hexanes) followed by recrystallization from methylene chloride

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

Procedure: The (3-hydroxymethyl-phenyl)-carbamic acid tert-butyl ester (1.67 g, 7.49 mmol) and triphenylphosphine (2.61 g, 9.96 mmol) were combined and dissolved in tetrahydrofuran (40 mL). Carbon tetrabromide (3.23 g, 9.74 mmol) was dissolved in acetonitrile (20 mL) and added dropwise to the reaction while stirring. After stirring for 5 h, the reaction was concentrated in vacuo to give a thick golden oil. Purification by flash column chromatography (Merck silica gel 60, 40-63 μm; 20% ethyl acetate/hexanes) afforded (3-bromomethyl-phenyl)-carbamic acid tert-butyl ester (1.52 g, 78%) as a white powder: H1-NMR (400 MHz, CDCl3) δ 1.53 (9H, s), 4.46 (2H, s), 6.47 (1H, bs), 7.06 (1H, d, J=7.2 Hz), 7.19-7.27 (2H, m), 7.51 (1H, s). added dropwise to the reaction After stirring for 5 h the reaction was concentrated in vacuo to give a thick golden oil Purification by flash column chromatography (Merck silica gel 60, 40-63 μm; 20% ethyl acetate/hexanes)