12-methoxydodecanoic acid

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 12-bromododecanoic acid (2.0 g, 7.16 mmol) was added to a solution of potassium hydroxide (1.61 g, 28.65 mmol) in methanol (30 mLs) and refluxed for 20 hrs. After cooling and acidification with HCl, solvent was removed under reduced pressure. The sample was dissolved in ethyl acetate and extracted with water. The organic phase was dried over sodium sulfate, and the solvent removed under reduced pressure. The product was purified by silica column chromatography in 1% diethyl ether/0.3% formic acid/methylene chloride to yield 12-(methoxy)dodecanoic acid (640 mg, 39%): mp 45°-47° C.; 1H NMR (300 MHz, CDCl3) δ 1.20-1.45 (bm, 15H, methylene envelope), 1.51-1.69 (bm, 4H, 0--CH2 --CH2, CH2 --CH2 --COOH), 2.34 (t, 2H, J=7.4, CH2 --COOH), 3.34 (s, 3H, 0--CH3), 3.38 (t, 2H, J=6.7, 0--CH2), 10.99 (br, 1H, COOH); 13C NMR (75.4 MHz, CDCl3) δ 24.75, 26.16, 29.10, 29.27, 29.38, 29.44, 29.53, 34.12, 58.50, 72.97, 179.70; m/z 231 (M+H+). refluxed for 20 hrs After cooling acidification with HCl, solvent was removed under reduced pressure The sample was dissolved in ethyl acetate extracted with water The organic phase was dried over sodium sulfate the solvent removed under reduced pressure The product was purified by silica column chromatography in 1% diethyl ether/0.3% formic acid/methylene chloride

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: The title compound was prepared by the method of Example 3 using the title product of Example 1 (3 g, 13 mmol) instead of the title product of Example 2. Chromatography by of the crude residue on silica gel using 50--50 ethyl acetate heptane gave the title compound (2.2 g) as a white powder, m.p. 32.6°-36.7° C. (DSC). The structure was supported by NMR, infrared spectroscopy, elemental analysis and mass spectroscopy.

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Oxalyl chloride (16.0 g, 70 mmol) was added dropwise to a solution of 12-methoxydodecanoic acid (9.8 g, 77 mmol) in 300 mL of anhydrous toluene. After stirring at room temperature for 16 hours the solvent was removed on a rotary evaporator. The residue was taken up in anhydrous toluene and concentrated to give the title compound (17.4 g) as a yellow liquid. The structure was verified by infrared spectroscopy (1796 cm-1) and NMR. was removed on a rotary evaporator concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Tetramethylammonium hydroxide pentahydrate (1.7 g, 9.4 mmol) was added to a solution of the title product of Example 1 (2.0 g, 8.7 mmol) in 45 mL of anhydrous acetonitrile. After stirring for 4 hours at room temperature, methyl iodide (0.6 mL, 9.6 mmol) was added and the resulting milky solution stirred at room temperature. The solvent was removed by rotary evaporator and partioned between diethyl ether and water. The organic phase was washed with brine, dried over magnesium sulfate, filtered and concentrated to give the title compound (2.1 g) as a pale yellow liquid. The structure was supported by NMR, infrared spectroscopy, elemental analysis and mass spectroscopy. the resulting milky solution stirred at room temperature The solvent was removed by rotary evaporator The organic phase was washed with brine dried over magnesium sulfate filtered concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Reaction Scheme 4 illustratively shows the preparation of 12-methoxy-N-(phenyl-methyl)dodecanamide wherein 12-methoxydodecanoic acid (8) is treated with oxalyl chloride in anhydrous toluene to form 12-methoxydodecanoyl chloride (9) which in turn reacts with benzylamine in methylene chloride to give the desired fatty acid amide (10). Reaction Scheme 4

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Tetramethylammonium hydroxide pentahydrate (1.7 g, 9.4 mmol) was added to a solution of the title product of Example 1 (2.0 g, 8.7 mmol) in 45 mL of anhydrous acetonitrile. After stirring for 4 hours at room temperature, methyl iodide (0.6 mL, 9.6 mmol) was added and the resulting milky solution stirred at room temperature. The solvent was removed by rotary evaporator and partioned between diethyl ether and water. The organic phase was washed with brine, dried over magnesium sulfate, filtered and concentrated to give the title compound (2.1 g) as a pale yellow liquid. The structure was supported by NMR, infrared spectroscopy, elemental analysis and mass spectroscopy. the resulting milky solution stirred at room temperature The solvent was removed by rotary evaporator The organic phase was washed with brine dried over magnesium sulfate filtered concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Reaction Scheme 4 illustratively shows the preparation of 12-methoxy-N-(phenyl-methyl)dodecanamide wherein 12-methoxydodecanoic acid (8) is treated with oxalyl chloride in anhydrous toluene to form 12-methoxydodecanoyl chloride (9) which in turn reacts with benzylamine in methylene chloride to give the desired fatty acid amide (10). Reaction Scheme 4

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 12-bromododecanoic acid (2.0 g, 7.16 mmol) was added to a solution of potassium hydroxide (1.61 g, 28.65 mmol) in methanol (30 mLs) and refluxed for 20 hrs. After cooling and acidification with HCl, solvent was removed under reduced pressure. The sample was dissolved in ethyl acetate and extracted with water. The organic phase was dried over sodium sulfate, and the solvent removed under reduced pressure. The product was purified by silica column chromatography in 1% diethyl ether/0.3% formic acid/methylene chloride to yield 12-(methoxy)dodecanoic acid (640 mg, 39%): mp 45-47° C.; 1H NMR (300 MHz, CDCl3) δ1.20-1.45 (bm, 15H, methylene envelope), 1.51-1.69 (bm, 4H, 0--CH2 --CH2, CH2 --CH2 --COOH), 2.34 (t, 2H, J=7.4, CH2 --COOH), 3.34 (s, 3H, 0--CH3), 3.38 (t, 2H, J=6.7, 0--CH2), 10.99 (br, 1H, COOH); 13C NMR (75.4 MHz, CDCl3) δ24.75, 26.16, 29.10, 29.27, 29.38, 29.44, 29.53, 34.12, 58.50, 72.97, 179.70; m/z 231 (M+H+). refluxed for 20 hrs After cooling acidification with HCl, solvent was removed under reduced pressure The sample was dissolved in ethyl acetate extracted with water The organic phase was dried over sodium sulfate the solvent removed under reduced pressure The product was purified by silica column chromatography in 1% diethyl ether/0.3% formic acid/methylene chloride

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Tetramethylammonium hydroxide pentahydrate (1.7 g, 9.4 mmol) was added to a solution of the title product of Example 1 (2.0 g, 8.7 mmol) in 45 mL of anhydrous acetonitrile. After stirring for 4 hours at room temperature, methyl iodide (0.6 mL, 9.6 mmol) was added and the resulting milky solution stirred at room temperature. The solvent was removed by rotary evaporator and partioned between diethyl ether and water. The organic phase was washed with brine, dried over magnesium sulfate, filtered and concentrated to give the title compound (2.1 g) as a pale yellow liquid. The structure was supported by NMR, infrared spectroscopy, elemental analysis and mass spectroscopy. the resulting milky solution stirred at room temperature The solvent was removed by rotary evaporator The organic phase was washed with brine dried over magnesium sulfate filtered concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Oxalyl chloride (16.0 g, 70 mmol) was added dropwise to a solution of 12-methoxydodecanoic acid (9.8 g, 77 mmol) in 300 mL of anhydrous toluene. After stirring at room temperature for 16 hours the solvent was removed on a rotary evaporator. The residue was taken up in anhydrous toluene and concentrated to give the title compound (17.4 g) as a yellow liquid. The structure was verified by infrared spectroscopy (1796 cm-1) and NMR. was removed on a rotary evaporator concentrated

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: Reaction Scheme 4 illustratively shows the preparation of 12-methoxy-N-(phenyl-methyl)dodecanamide wherein 12-methoxydodecanoic acid (8) is treated with oxalyl chloride in anhydrous toluene to form 12-methoxydodecanoyl chloride (9) which in turn reacts with benzylamine in methylene chloride to give the desired fatty acid amide (10). Reaction Scheme 4