1-nitropentane

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: 3-bromo-4-cyclohexyloxy-benzaldehyde (13 mmol, 3.7 g), 1-nitro-pentane (19.6 mmol, 2.3 g) and n-butyl amine (2.6 mmol, 0.19 g) were dissolved in toluene (5 mL) and refluxed for 48 h. The reaction mixture was cooled, filtered and evaporated the solvent and purified by column chromatography using 2% ethyl acetate in hexane as an eluents to provide 2-bromo-1-cyclohexyloxy-4-((E)-2-nitro-hex-1-enyl)-benzene (3.5 g). refluxed for 48 h The reaction mixture was cooled filtered evaporated the solvent purified by column chromatography

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a stirred solution of 1-nitropentane (1.0 g, 8.5 mmol) and tri-fluoroacetaldehyde ethyl hemiacetal (1.2 mL, 8.5 mL) was added potassium carbonate (K2CO3) (0.06 g, 0.43 mmol). The reaction mixture was heated at 60° C. under Ar for 3 h. The mixture was cooled to R.T., then taken up in EA (50 mL). The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl (2×10 mL), dried (MgSO4), filtered and concentrated to give (2SR)-(3SR)-3-nitro-1,1,1-trifluoro-2-heptanol as a crude oil (1.7 g, 93%): 1H NMR (CDCl3, 300 MHz) δ 0.91 (t, 3H, J=7.2 Hz), 1.24-1.43 (m, 4H), 2.04-2.11 (m, 2H), 4.08-4.77 (m, 3H) ppm. The mixture was cooled to R.T. The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl (2×10 mL) dried (MgSO4) filtered concentrated

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a stirred solution of 1-nitropentane (1.0 g, 8.5 mmol) and trifluoroacetaldehyde ethyl hemiacetal (1.2 mL, 8.5 mL) was added potassium carbonate (K2CO3) (0.06 g, 0.43 mmol). The reaction mixture was heated at 60° C. under Ar for 3 h. The mixture was cooled to R.T., then taken up in EA (50 mL). The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl (2×10 mL), dried (MgSO4), filtered and concentrated to give (2SR)-(3SR)-3-nitro-1,1,1-trifluoro-2-heptanol as a crude oil (1.7 g, 93%): 1H NMR (CDCl3, 300 MHz) δ 0.91 (t, 3 H, J=7.2 Hz), 1.24-1.43 (m, 4 H), 2.04-2.11 (m, 2 H), 4.08-4.77 (m, 3 H) ppm. The mixture was cooled to R.T. The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl (2×10 mL) dried (MgSO4) filtered concentrated

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:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a stirred solution of 1-nitropentane (1.0 g, 8.5 mmol) and trifluoroacetaldehyde ethyl hemiacetal (1.2 mL, 8.5 mL) was added potassium carbonate (K2CO3 ) (0.06 g, 0.43 mmol). The reaction mixture was heated at 60° C. under Ar for 3 h. The mixture was cooled to R.T., then taken up in EA (50 mL). The organic layer was washed with 1 N HCl (2×10 mL), sat. NaCl (2×10 mL), dried (MgSO4), filtered and concentrated to give (2SR)-(3SR)-3-nitro-1,1,1-trifluoro-2-heptanol as a crude oil (1.7 g, 93%): 1H NMR (CDCl3, 300 MHz) δ 0.91 (t, 3H, J=7.2 Hz), 1.24-1.43 (m, 4H), 2.04-2.11 (m, 2H), 4.08-4.77 (m, 3H) ppm. The mixture was cooled to R.T. The organic layer was washed with 1 N HCl (2×10 mL), sat. NaCl (2×10 mL) dried (MgSO4) filtered concentrated

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a stirred solution of 1-nitropentane (1.0 g, 8.5 mmol) and trifluoroacetaldehyde ethyl hemiacetal (1.2 mL, 8.5 mL) was added potassium carbonate (K2CO3 ) (0.06 g, 0.43 mmol). The reaction mixture was heated at 60° C. under Ar for 3 h. The mixture was cooled to R.T., then taken up in EA (50 mL). The organic layer was washed with 1 N HCl (2×10 mL), sat. NaCl (2×10 mL), dried (MgSO4), filtered and concentrated to give (2SR)-(3SR)-3-nitro-1,1,1-trifluoro-2-heptanol as a crude oil (1.7 g, 93%): 1H NMR (CDCl3, 300 MHz) δ 0.91 (t, 3H, J=7.2 Hz), 1.24-1.43 (m, 4H), 2.04-2.11 (m, 2H), 4.08-4.77 (m, 3H) ppm. The mixture was cooled to R.T. The organic layer was washed with 1 N HCl (2×10 mL), sat. NaCl (2×10 mL) dried (MgSO4) filtered concentrated

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

実験手順: 6-Phenylhexanoic acid (0.100 g, 0.52 mmol) and CDI (0.169 g, 1.04 mmol) were added together and then reacted with nitropentane (0.091 g, 0.78 mmol) and DBU (0.198 g, 1.30 mmol) according to the general procedure. Purification by column chromatography gave 0.049 g (32%) as a yellow oil: 1H NMR (400 MHz, CDCl3) δ 7.28 (m, 2H), 7.17 (m, 3H), 5.10 (dd, J=4.4, 10.0 Hz, 1H), 2.61 (m, 4H), 1.63 (m, 6H), 1.35 (m, 6H) 0.92 (t, J=6.8 Hz, 3H) ppm; 13C NMR (100 MHz, CDCl3) δ 199.5, 142.5, 128.6, 128.5, 126.0, 94.5, 39.5, 35.9, 31.3, 29.6, 28.7, 28.1, 23.3, 22.2, 13.9 ppm; IR νmax (cm−1) 3027, 2931, 2859, 1731, 1559, 1454, 1363, 1030, 748, 700; HRMS (FAB) calcd for C17H25NO3 (MNa+) 314.1727, found 314.1722. Purification by column chromatography gave 0.049 g (32%) as a yellow oil

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a stirred solution of 1-nitropentane (1.0 g, 8.5 mmol) and trifluoroacetaldehyde ethyl hemiacetal (1.2 mL, 8.5 mL) was added potassium carbonate (K2CO3) (0.06 g, 0.43 mmol). The reaction mixture was heated at 60° C. under Ar for 3 h. The mixture was cooled to R.T., then taken up in EA (50 mL). The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl. (2×10 mL), dried (MgSO4), filtered and concentrated to give (2SR)-(3SR)-3-nitro-1,1,1-trifluoro-2-heptanol as a crude oil (1.7 g, 3%): 1H NMR (CDCl3, 300 MHz) δ 0.91 (t, 3H, J=7.2 Hz), 1.24-1.43 (m, 4H), 2.04-2.11 (m, 2H), 4.08-4.77 (m, 3H) ppm. The mixture was cooled to R.T. The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl (2×10 mL), dried (MgSO4) filtered concentrated

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a stirred solution of 1-nitropentane (1.0 g, 8.5 mmol) and trifluoroacetaldehyde ethyl hemiacetal (1.2 mL, 8.5 mL) was added potassium carbonate (K2CO3) (0.06 g, 0.43 mmol). The reaction mixture was heated at 60° C. under Ar for 3 h. The mixture was cooled to R.T., then taken up in EA (50 mL). The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl. (2×10 mL), dried (MgSO4), filtered and concentrated to give (2SR)-(3SR)-3-nitro-1,1,1-trifluoro-2-heptanol as a crude oil (1.7 g, 3%): 1H NMR (CDCl3, 300 MHz) δ 0.91 (t, 3H, J=7.2 Hz), 1.24-1.43 (m, 4H), 2.04-2.11 (m, 2H), 4.08-4.77 (m, 3H) ppm. The mixture was cooled to R.T. The organic layer was washed with 1N HCl (2×10 mL), sat. NaCl (2×10 mL), dried (MgSO4) filtered concentrated

反応条件: temp:60.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: To a stirred solution of 1-nitropentane (1.0 g, 8.5 mmol) and trifluoroacetaldehyde ethyl hemiacetal (1.2 mL, 8.5 mL) was added potassium carbonate (K2CO3 ) (0.06 g, 0.43 mmol). The reaction mixture was heated at 60° C. under Ar for 3 h. The mixture was cooled to R.T., then taken up in EA (50 mL). The organic layer was washed with 1 N HCl (2×10 mL), sat. NaCl (2×10 mL), dried (MgSO4), filtered and concentrated to give (2SR)-(3SR)-3-nitro-1,1,1-trifluoro-2-heptanol as a crude oil (1.7 g, 93%): 1H NMR (CDCl3, 300 MHz) δ0.91 (t, 3H, J=7.2 Hz), 1.24-1.43 (m, 4H), 2.04-2.11 (m, 2H), 4.08-4.77 (m, 3H) ppm. The mixture was cooled to R.T. The organic layer was washed with 1 N HCl (2×10 mL), sat. NaCl (2×10 mL) dried (MgSO4) filtered concentrated