ethyl 6-isocyanatohexanoate

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Diisopropylethylamine (35 μL, 0.2 mmol), 6-isocyanato-hexanoic acid ethyl ester (40 μL, 0.2 mmol), and {[4-(4′-amino-2′-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester ((Example 220: step b) 20 mg, 0.04 mmol) were stirred for 24 h in DCM (1 mL). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) and was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL). The solution was dried, concentrated in vacuo, and purified by SiO2 preparative TLC to yield the product (12 mg, 43%). 1H-NMR (CDCl3): δ 8.06 (s, 1H), 7.94 (m, 1H), 7.81 (m, 1H), 7.46 (m, 2H), 7.23 (br t, 1H, J=5.4 Hz), 7.15 (m, 1H), 7.07 (m, 2H), 6.97 (m, 1H), 5.32 (br t, 1H), 4.15 (q, 2H, J=7.2 Hz), 2.40 (s, 3H), 2.30 (t, 2H, J=7.3 Hz), 2.11 (s, 3H), 1.54–1–70 (m, 4H), 1.51 (s, 9H) 1.35 (m, 2H), 1.25 (t, 3H, J=7.3 Hz). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL) The solution was dried concentrated in vacuo purified by SiO2 preparative TLC

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Diisopropylethylamine (35 μL, 0.2 mmol), 6-isocyanato-hexanoic acid ethyl ester (40 μL, 0.2 mmol), and {[4-(4′-amino-2′-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester ((Example 220: step b) 20 mg, 0.04 mmol) were stirred for 24 h in DCM (1 mL). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) and was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL). The solution was dried, concentrated in vacuo, and purified by SiO2 preparative TLC to yield the product (12 mg, 43%). 1H-NMR (CDCl3): δ 8.06 (s, 1H), 7.94 (m, 1H), 7.81 (m, 1H), 7.46 (m, 2H), 7.23 (br t, 1H, J=5.4 Hz), 7.15 (m, 1H), 7.07 (m, 2H), 6.97 (m, 1H), 5.32 (br t, 1H), 4.15 (q, 2H, J=7.2 Hz), 2.40 (s, 3H), 2.30 (t, 2H, J=7.3 Hz), 2.11 (s, 3H), 1.54–1–70 (m, 4H), 1.51 (s, 9H) 1.35 (m, 2H), 1.25 (t, 3H, J=7.3 Hz). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL) The solution was dried concentrated in vacuo purified by SiO2 preparative TLC

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 6-Isocyanato-hexanoic acid ethyl ester (370 μL, 2.16 mmol) was added to a solution of 4-bromo-3-methyl-5-nitro-phenylamine (250 mg, 1.08 mmol, Example 135: step a) in CH2Cl2 (5 mL, anhydrous) at rt. The reaction mixture was stirred overnight, then diluted in EtOAc and washed with saturated NH4Cl solution, water, and brine. The organic layer was dried over magnesium sulfate. Removal of solvents in vacuo was followed by flash chromatography (50–75% EtOAc/hexanes) to afford the title compound as a brown oil (162 mg, 36%). 1H-NMR (CDCl3): δ 7.59 (d, 1H, J=2.56 Hz), 7.42–7.48 (m, 1H), 4.10–4.17 (m, 2H), 3.20–3.28 (m, 2H), 2.39 (s, 3H), 2.29–2.35 (m, 2H), 1.47–1.68 (m, 4H), 1.23–1.41 (m, 5H). at rt washed with saturated NH4Cl solution, water, and brine The organic layer was dried over magnesium sulfate Removal of solvents in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Diisopropylethylamine (35 μL, 0.2 mmol), 6-isocyanato-hexanoic acid ethyl ester (40 μL, 0.2 mmol), and {[4-(4′-amino-2′-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester ((Example 220: step b) 20 mg, 0.04 mmol) were stirred for 24 h in DCM (1 mL). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) and was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL). The solution was dried, concentrated in vacuo, and purified by SiO2 preparative TLC to yield the product (12 mg, 43%). 1H-NMR (CDCl3): δ 8.06 (s, 1H), 7.94 (m, 1H), 7.81 (m, 1H), 7.46 (m, 2H), 7.23 (br t, 1H, J=5.4 Hz), 7.15 (m, 1H), 7.07 (m, 2H), 6.97 (m, 1H), 5.32 (br t, 1H), 4.15 (q, 2H, J=7.2 Hz), 2.40 (s, 3H), 2.30 (t, 2H, J=7.3 Hz), 2.11 (s, 3H), 1.54–1–70 (m, 4H), 1.51 (s, 9H) 1.35 (m, 2H), 1.25 (t, 3H, J=7.3 Hz). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL) The solution was dried concentrated in vacuo purified by SiO2 preparative TLC

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 6-Isocyanato-hexanoic acid ethyl ester (370 μL, 2.16 mmol) was added to a solution of 4-bromo-3-methyl-5-nitro-phenylamine (250 mg, 1.08 mmol, Example 135: step a) in CH2Cl2 (5 mL, anhydrous) at rt. The reaction mixture was stirred overnight, then diluted in EtOAc and washed with saturated NH4Cl solution, water, and brine. The organic layer was dried over magnesium sulfate. Removal of solvents in vacuo was followed by flash chromatography (50–75% EtOAc/hexanes) to afford the title compound as a brown oil (162 mg, 36%). 1H-NMR (CDCl3): δ 7.59 (d, 1H, J=2.56 Hz), 7.42–7.48 (m, 1H), 4.10–4.17 (m, 2H), 3.20–3.28 (m, 2H), 2.39 (s, 3H), 2.29–2.35 (m, 2H), 1.47-1.68 (m, 4H), 1.23–1.41 (m, 5H). at rt washed with saturated NH4Cl solution, water, and brine The organic layer was dried over magnesium sulfate Removal of solvents in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 6-Isocyanato-hexanoic acid ethyl ester (370 μL, 2.16 mmol) was added to a solution of 4-bromo-3-methyl-5-nitro-phenylamine (250 mg, 1.08 mmol, Example 135: step a) in CH2Cl2 (5 mL, anhydrous) at rt. The reaction mixture was stirred overnight, then diluted in EtOAc and washed with saturated NH4Cl solution, water, and brine. The organic layer was dried over magnesium sulfate. Removal of solvents in vacuo was followed by flash chromatography (50–75% EtOAc/hexanes) to afford the title compound as a brown oil (162 mg, 36%). 1H-NMR (CDCl3): δ 7.59 (d, 1H, J=2.56 Hz), 7.42–7.48 (m, 1H), 4.10–4.17 (m, 2H), 3.20–3.28 (m, 2H), 2.39 (s, 3H), 2.29–2.35 (m, 2H), 1.47-1.68 (m, 4H), 1.23–1.41 (m, 5H). at rt washed with saturated NH4Cl solution, water, and brine The organic layer was dried over magnesium sulfate Removal of solvents in vacuo

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Diisopropylethylamine (35 μL, 0.2 mmol), 6-isocyanato-hexanoic acid ethyl ester (40 μL, 0.2 mmol), and {[4-(4′-amino-2′-methyl-biphenyl-3-sulfonyl)-5-methylsulfanyl-thiophen-2-yl]-imino-methyl}-carbamic acid tert-butyl ester ((Example 220: step b) 20 mg, 0.04 mmol) were stirred for 24 h in DCM (1 mL). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) and was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL). The solution was dried, concentrated in vacuo, and purified by SiO2 preparative TLC to yield the product (12 mg, 43%). 1H-NMR (CDCl3): δ 8.06 (s, 1H), 7.94 (m, 1H), 7.81 (m, 1H), 7.46 (m, 2H), 7.23 (br t, 1H, J=5.4 Hz), 7.15 (m, 1H), 7.07 (m, 2H), 6.97 (m, 1H), 5.32 (br t, 1H), 4.15 (q, 2H, J=7.2 Hz), 2.40 (s, 3H), 2.30 (t, 2H, J=7.3 Hz), 2.11 (s, 3H), 1.54–1–70 (m, 4H), 1.51 (s, 9H) 1.35 (m, 2H), 1.25 (t, 3H, J=7.3 Hz). The solution was partitioned between EtOAc (40 mL) and 0.1 N HCl (10 mL) was washed with additional 0.1N HCl (2×10 mL), NaHCO3 (10 mL), and brine (20 mL) The solution was dried concentrated in vacuo purified by SiO2 preparative TLC

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: 6-Isocyanato-hexanoic acid ethyl ester (370 μL, 2.16 mmol) was added to a solution of 4-bromo-3-methyl-5-nitro-phenylamine (250 mg, 1.08 mmol, Example 135: step a) in CH2Cl2 (5 mL, anhydrous) at rt. The reaction mixture was stirred overnight, then diluted in EtOAc and washed with saturated NH4Cl solution, water, and brine. The organic layer was dried over magnesium sulfate. Removal of solvents in vacuo was followed by flash chromatography (50–75% EtOAc/hexanes) to afford the title compound as a brown oil (162 mg, 36%). 1H-NMR (CDCl3): δ 7.59 (d, 1H, J=2.56 Hz), 7.42–7.48 (m, 1H), 4.10–4.17 (m, 2H), 3.20–3.28 (m, 2H), 2.39 (s, 3H), 2.29–2.35 (m, 2H), 1.47–1.68 (m, 4H), 1.23–1.41 (m, 5H). at rt washed with saturated NH4Cl solution, water, and brine The organic layer was dried over magnesium sulfate Removal of solvents in vacuo