1-nitrobutane

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

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: n-Butylamine (8.31 ml, 84.1 mmol) and methyl 4-formylbenzoate (10.6 g, 64.7 mmol) was heated with reflux benzene (50 ml) in a Dean-Stark trap until a theoretical amount of water was recovered. The solvent was evaporated under reduced pressure. To the residue were added glacial acetic acid (30 ml) and nitrobutane (10.0 g, 97.0 mmol), and the mixture was stirred at 110° C. for 4 hrs. and allowed to cool to room temperature. The insoluble materials were filtered off and dried to give the title compound (7.53 g) as a pale-yellow powder. was recovered The solvent was evaporated under reduced pressure to cool to room temperature The insoluble materials were filtered off dried

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

Procedure: 6-Phenylhexanoic acid (0.100 g, 0.52 mmol) and CDI (0.169 g, 1.04 mmol) were added together and then reacted with nitrobutane (0.080 g, 0.78 mmol) and DBU (0.198 g, 1.30 mmol) according to the general procedure. Purification by column chromatography gave 0.084 g (59%) as a yellow oil: 1H NMR (400 MHz, CDCl3) δ 7.30 (m, 2H), 7.20 (m, 3H), 5.17 (dd, J=4.4, 10.0 Hz, 1H), 2.63 (m, 4H), 1.65 (m, 6H), 1.36 (m, 4H) 1.00 (t, J=7.2 Hz, 3H) ppm; 13C NMR (100 MHz, CDCl3) δ 199.5, 142.6, 128.7, 128.6, 126.0, 94.3, 39.5, 35.9, 31.8, 31.4, 28.7, 23.3, 19.5, 13.6 ppm; IR νmax (cm−1) 3027, 2935, 2858, 1730, 1560, 1454, 1373, 1031, 749, 700; HRMS (FAB) calcd for C16H23NO3 (MNa+) 300.1570, found 300.1575. Purification by column chromatography gave 0.084 g (59%) as a yellow oil

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

Procedure: By following substantially the same procedure described in Example 1, Step B except that the 4-(2,3-dichloro-4-formylphenoxy)butyric acid and 1-nitropropane are replaced by equimolar quantities of 1-(2,3-dichloro-4-formylphenoxy)cyclobutane-1-carboxylic acid (See Example 6, Step A) and 1-nitrobutane and there is obtained (E)-1-[2,3-dichloro-4-(2-nitro-l-pentenyl)phenoxy]cyclobutane-1-carboxylic acid

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: n-Butylamine (8.31 ml, 84.1 mmol) and methyl 4-formylbenzoate (10.6 g, 64.7 mmol) was heated with reflux benzene (50 ml) in a Dean-Stark trap until a theoretical amount of water was recovered. The solvent was evaporated under reduced pressure. To the residue were added glacial acetic acid (30 ml) and nitrobutane (10.0 g, 97.0 mmol), and the mixture was stirred at 110° C. for 4 hrs. and allowed to cool to room temperature. The insoluble materials were filtered off and dried to give the title compound (7.53 g) as a pale-yellow powder. was recovered The solvent was evaporated under reduced pressure to cool to room temperature The insoluble materials were filtered off dried

Conditions: temp:110.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: n-Butylamine (8.31 ml, 84.1 mmol) and methyl 4-formylbenzoate (10.6 g, 64.7 mmol) was heated with reflux benzene (50 ml) in a Dean-Stark trap until a theoretical amount of water was recovered. The solvent was evaporated under reduced pressure. To the residue were added glacial acetic acid (30 ml) and nitrobutane (10.0 g, 97.0 mmol), and the mixture was stirred at 110° C. for 4 hrs. and allowed to cool to room temperature. The insoluble materials were filtered off and dried to give the title compound (7.53 g) as a pale-yellow powder. was recovered The solvent was evaporated under reduced pressure to cool to room temperature The insoluble materials were filtered off dried

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

Procedure: Nitrobutane (0.705 mL, 6.66 mmol) and phenylisocyanate (1.50 mL, 13.3 mmol) were dissolved in benzene (13.5 mL) and added to a flask containing 7a-ethynyl-hexahydro-1H-pyrrolizine (450 mg, 3.33 mmol, from step 13a). The solution was stirred at ambient temperature for 1 hour and at reflux for 5 hours. The mixture was cooled, filtered, concentrated and diluted with EtOAc. The solution was extracted with 6N HCl. The aqueous phase was made basic with 15% NaOH and extracted with methylene chloride. The organic extracts were combined, dried (MgSO4) and concentrated. The residue was residue was chromatographed (silica gel; CHCl3 /MeOH, 98:2) to afford an amber oil (392 mg, 53%). 1H NMR (CDCl3, 300 MHz) δ0.97 (t, J=7.5 Hz, 3H), 1.61-1.92 (m, 8H), 2.15-2.26 (m, 2H), 2.55-2.69 (m, 4H), 3.13-3.20 (m, 2H), 5.96 (s, 1H); MS (CI/NH3) m/z: 221 (M+H)+. added to a flask at reflux for 5 hours The mixture was cooled filtered concentrated diluted with EtOAc The solution was extracted with 6N HCl extracted with methylene chloride dried (MgSO4) concentrated was chromatographed (silica gel; CHCl3 /MeOH, 98:2)

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

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

Procedure: Nitrobutane (0.705 mL, 6.66 mmol) and phenylisocyanate (1.50 mL, 13.3 mmol) were dissolved in benzene (13.5 mL) and added to a flask containing 7a-ethynyl-hexahydro-1H-pyrrolizine (450 mg, 3.33 mmol, from step 13a). The solution was stirred at ambient temperature for 1 hour and at reflux for 5 hours. The mixture was cooled, filtered, concentrated and diluted with EtOAc. The solution was extracted with 6N HCl. The aqueous phase was made basic with 15% NaOH and extracted with methylene chloride. The organic extracts were combined, dried (MgSO4) and concentrated. The residue was residue was chromatographed (silica gel; CHCl3 /MeOH, 98:2) to afford an amber oil (392 mg, 53%). 1H NMR (CDCl3, 300 MHz) δ0.97 (t, J=7.5 Hz, 3H), 1.61-1.92 (m, 8H), 2.15-2.26 (m, 2H), 2.55-2.69 (m, 4H), 3.13-3.20 (m, 2H), 5.96 (s, 1H); MS (CI/NH3) m/z: 221 (M+H)+. added to a flask at reflux for 5 hours The mixture was cooled filtered concentrated diluted with EtOAc The solution was extracted with 6N HCl extracted with methylene chloride dried (MgSO4) concentrated was chromatographed (silica gel; CHCl3 /MeOH, 98:2)

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

Procedure: 6-Phenylhexanoic acid (0.100 g, 0.52 mmol) and CDI (0.169 g, 1.04 mmol) were added together and then reacted with nitrobutane (0.080 g, 0.78 mmol) and DBU (0.198 g, 1.30 mmol) according to the general procedure. Purification by column chromatography gave 0.084 g (59%) as a yellow oil: 1H NMR (400 MHz, CDCl3) δ 7.30 (m, 2H), 7.20 (m, 3H), 5.17 (dd, J=4.4, 10.0 Hz, 1H), 2.63 (m, 4H), 1.65 (m, 6H), 1.36 (m, 4H) 1.00 (t, J=7.2 Hz, 3H) ppm; 13C NMR (100 MHz, CDCl3) δ 199.5, 142.6, 128.7, 128.6, 126.0, 94.3, 39.5, 35.9, 31.8, 31.4, 28.7, 23.3, 19.5, 13.6 ppm; IR νmax (cm−1) 3027, 2935, 2858, 1730, 1560, 1454, 1373, 1031, 749, 700; HRMS (FAB) calcd for C16H23NO3 (MNa+) 300.1570, found 300.1575. Purification by column chromatography gave 0.084 g (59%) as a yellow oil

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

Procedure: By following substantially the same procedure described in Example 1, Step B except that the 4-(2,3-dichloro-4-formylphenoxy)butyric acid and 1-nitropropane are replaced by equimolar quantities of 1-(2,3-dichloro-4-formylphenoxy)cyclobutane-1-carboxylic acid (See Example 6, Step A) and 1-nitrobutane and there is obtained (E)-1-[2,3-dichloro-4-(2-nitro-l-pentenyl)phenoxy]cyclobutane-1-carboxylic acid

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

Procedure: Nitrobutane (0.705 mL, 6.66 mmol) and phenylisocyanate (1.50 mL, 13.3 mmol) were dissolved in benzene (13.5 mL) and added to a flask containing 7a-ethynyl-hexahydro-1H-pyrrolizine (450 mg, 3.33 mmol, from step 13a). The solution was stirred at ambient temperature for 1 hour and at reflux for 5 hours. The mixture was cooled, filtered, concentrated and diluted with EtOAc. The solution was extracted with 6N HCl. The aqueous phase was made basic with 15% NaOH and extracted with methylene chloride. The organic extracts were combined, dried (MgSO4) and concentrated. The residue was residue was chromatographed (silica gel; CHCl3 /MeOH, 98:2) to afford an amber oil (392 mg, 53%). 1H NMR (CDCl3, 300 MHz) δ0.97 (t, J=7.5 Hz, 3H), 1.61-1.92 (m, 8H), 2.15-2.26 (m, 2H), 2.55-2.69 (m, 4H), 3.13-3.20 (m, 2H), 5.96 (s, 1H); MS (CI/NH3) m/z: 221 (M+H)+. added to a flask at reflux for 5 hours The mixture was cooled filtered concentrated diluted with EtOAc The solution was extracted with 6N HCl extracted with methylene chloride dried (MgSO4) concentrated was chromatographed (silica gel; CHCl3 /MeOH, 98:2)