1-N-benzyl-4-bromobenzene-1,2-diamine

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2H), 7.05-7.08 (m, 3H), 7.30-7.36 (m, 4H), 7.44-7.50 (m, 3H), 7.66-7.68 (m, 2H) and 7.99 (dd, 1H, J=0.4 & 1.6 Hz). MS(ES+): m/z 363.20 and 365.26[MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2 H), 7.05-7.08 (m, 3 H), 7.30-736 (m, 4 H), 7.44-7.50 (m, 3 H), 7.66-7.68 (m, 2 H) and 7.99 (dd, 1 H, J=0.4 & 1.6 Hz). MS(ES+): m/z 363.20 and 365.26[MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2 H), 7.05-7.08 (m, 3 H), 7.30-736 (m, 4 H), 7.44-7.50 (m, 3 H), 7.66-7.68 (m, 2 H) and 7.99 (dd, 1 H, J=0.4 & 1.6 Hz). MS(ES+): m/z 363.20 and 365.26[MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH-H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm =5.44 (s, 2 H), 7.05-7.08 (m, 3 H), 7.30-7.36 (m, 4 H), 7.44-7.50 (m, 3 H), 7.66-7.68 (m, 2 H) and 7.99 (dd, 1 H, J=0.4 & 1.6 Hz). MS(ES+): m/z 363.20 and 365.26[MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2 H), 7.05-7.08 (m, 3 H), 7.30-7.36 (m, 4 H), 7.44-7.50 (m, 3 H), 7.66-7.68 (m, 2 H) and 7.99 (dd, 1 H, J=0.4 & 1.6 Hz). MS(ES+): m/z 363.20 and 365.26[MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: To a solution of benzyl-(4-bromo-2-nitro-phenyl)-amine (276 mg, 0.9 mmol) in 3 ml acetic acid, was added iron (70 mg, 1.2 mmol). The reaction mixture was heated to 40° C. under argon for 2 hours. The mixture was cooled to ambient temperature and filtered through celite and the filtrate was concentrated. The resulting solid was dissolved in ethyl acetate. The organic layer was washed with saturated NaHCO3, dried over MgSO4, filtered and the filtrate was concentrated in vacuo to yield crude product that was used in Example 6c. The mixture was cooled to ambient temperature filtered through celite the filtrate was concentrated The resulting solid was dissolved in ethyl acetate The organic layer was washed with saturated NaHCO3 dried over MgSO4 filtered the filtrate was concentrated in vacuo to yield crude product that

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2H), 7.05-7.08 (m, 3H), 7.30-7.36 (m, 4H), 7.44-7.50 (m, 3H), 7.66-7.68 (m, 2H) and 7.99 (dd, 1H, J=0.4 & 1.6 Hz). MS(ES+): m/z 363.20 and 365.26[MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2H), 7.05-7.08 (m, 3H), 7.30-7.36 (m, 4H), 7.44-7.50 (m, 3H), 7.66-7.68 (m, 2H) and 7.99 (dd, 1H, J=0.4 & 1.6 Hz). MS (ES+): m/z 363.20 and 365.26 [MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2H, 7.05-7.08 (m, 3H), 7.30-7.36 (m, 4H), 7.44-7.50 (m, 3H), 7.66-7.68 (m, 2H) and 7.99 (dd, 1H, J=0.4 & 1.6 Hz). MS (ES+): m/z 363.20 and 365.26 [MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2 H), 7.05-7.08 (m, 3 H), 7.30-7.36 (m, 4 H), 7.44-7.50 (m, 3 H), 7.66-7.68 (m, 2 H) and 7.99 (dd, 1 H, J=0.4 & 1.6 Hz). MS (ES+): m/z 363.20 and 365.26 [MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried

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

Procedure: p-TsOH.H2O (311.7 mg, 1.606 mmol) was added to a DCM (50 ml) solution of N1-benzyl-4-bromobenzene-1,2-diamine (4451 mg, 16.06 mmol) and trimethyl orthobenzoate (3096 μl, 17.66 mmol) and the resulting mixture was stirred at rt under an atmosphere of Nitrogen for 40 h. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL), filtered, washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice and 40% MeOH/H2O (2×50 ml), and dried to give the title compound. 1H NMR (400 MHz, DMSO-d6) δ ppm=5.44 (s, 2 H), 7.05-7.08 (m, 3 H), 7.30-736 (m, 4 H), 7.44-7.50 (m, 3 H), 7.66-7.68 (m, 2 H) and 7.99 (dd, 1 H, J=0.4 & 1.6 Hz). MS(ES+): m/z 363.20 and 365.26[MH+]. The reaction mixture was then concentrated in vacuo to give a yellow solid which was triturated with 40% MeOH/water (375 mL) filtered washed with saturated NaHCO3 (20 ml)+H2O (80 ml) twice 40% MeOH/H2O (2×50 ml), and dried