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CAS No. : | 7037-49-2 | MDL No. : | MFCD02178380 |
Formula : | C8H17NO | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | DBIMLJDSPUCGGY-UHFFFAOYSA-N |
M.W : | 143.23 | Pubchem ID : | 81497 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
Preparation 153-(1-Methylpiperidin-4-yl)-propylamine(A). Preparation of 3-(1-methylpiperidin-4-yl)-propan-1-ol; Formalin (6.33 g, 211 mmol) is added to a stirred solution of 3-(piperidin-4-yl)-propan-1-ol (3.02 g, 21.1 mmol) in acetonitrile (30 mL) at ambient temperature. The solution is allowed to stir for 20 minutes. Sodium cyanoborohydride (3.31 g, 52.7 mmol) and acetic acid (3 mL) are sequentially added to the reaction mixture and the resultant mixture is stirred for another 2 hours. After concentration, the crude product is dissolved in dichloromethane (150 mL), washed with saturated aqueous NaHCO3 (60 mL.x.2), dried and concentrated. The crude product is subjected to chromatography on silica gel and eluted with 2 M NH3/CH3OH in dichloromethane 0-15percent to give the title compound as an oil (2.70 g). | ||
With hydrogen;5% rhodium-on-charcoal; In water; at 20 - 50℃; under 15514.9 Torr; | Example 3 1-Methyl-4-Piperidinepropanol An Argonaut reaction vessel was charged with 4-pyridinepropanol (500.0 mg, 3.49 mmol) and 5percent Rh/C (62percent wet, 300.0 mg) in water (4.00 g). The resultant slurry was stirred at 500 RPM and the unit was pressurized with 300 psi of hydrogen. The resultant mixture was heated at 50° C. for about 4-4.5 h, during which time the hydrogen uptake ceased. The resultant mixture was then cooled to room temperature and a 37percent formaldehyde solution (340.0 mg, 4.19 mmol) was added in a single portion. The Argonaut vessel was sealed and the resultant slurry was stirred at 500 RPM, the unit was repressurized with 300 psi of hydrogen, and heated to 50° C. Hydrogen uptake ceased in about 1.2-1.5 h to yield the title compound, which was used in the next step without further purification or isolation. HPLC-MS analysis of an aliquot showed only C9H19NO MS: (Cl): m/z 158 (M++1) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
98% | With hydrogenchloride; Adam?s catalyst; hydrogen; In methanol; water; under 60.006 Torr; for 46h;Inert atmosphere; | Under an atmosphere of argon platinum(IV)oxide (1.45 g, 6.4 mmol) was added to a solution of 16 (10.0 g, 72.89 mmol) in MeOH (110 mL) and 32percent hydrochloric acid (18 mL). The mixture was vigorously stirred under a low pressure of hydrogen (8 kPa) for 46 h. The major part of the catalyst was removed by filtration and the volatiles were removed under reduced pressure. The oily residue was taken up in 15percent aq NaOH (80 mL) and the product was extracted with CH2Cl2 (150 and 3 * 100 mL). The pooled extracts were washed with water (20 mL) and dried over Na2SO4. Evaporation of the volatiles and drying in vacuo yielded product 17 as a white crystalline, compact solid (10.3 g, 98percent) mp 58-60 °C. Rf = 0.2 (CH2Cl2/MeOH/28percent aq NH3 50:10:1). IR (Nujol) 3290, 1320 cm-1. 1H NMR (300 MHz, CD3OD) delta (ppm) 1.08-1.23 (m, 2H), 1.27-1.36 (m, 2H), 1.36-1.49 (m, 1H), 1.53-1.63 (m, 2H), 1.74 (br d, 2H, J ca 13.4 Hz), 2.59 (dt, 2H, J 12.4 2.6 Hz), 3.04 (td, 2H, J 12.4 2.9 Hz), 3.56 (t, 2H, J 6.6 Hz). 13C NMR (75 MHz, CD3OD) delta (ppm) 31.5, 34.8, 35.2, 38.0, 47.9, 64.0. MS (ESI, MeOH) m/z (percent) 287 (36) [2M+H]+, 144 (100) [M+H]+. C8H17NO (143.2). |
palladium-carbon; In acetic acid; | a 3-(4-piperidinyl)propanol 3-(4-piperidinyl)propanol was prepared by hydrogenation of 3-(4-pyridyl)propanol in acetic acid in the presence of Pd/C according to the method described in J. Org. Chem., 1962, 27, 2966-2967. | |
With hydrogen;5% rhodium-on-charcoal; In water; at 50℃; under 15514.9 Torr; | Example 3 1-Methyl-4-Piperidinepropanol An Argonaut reaction vessel was charged with 4-pyridinepropanol (500.0 mg, 3.49 mmol) and 5percent Rh/C (62percent wet, 300.0 mg) in water (4.00 g). The resultant slurry was stirred at 500 RPM and the unit was pressurized with 300 psi of hydrogen. The resultant mixture was heated at 50° C. for about 4-4.5 h, during which time the hydrogen uptake ceased. The resultant mixture was then cooled to room temperature and a 37percent formaldehyde solution (340.0 mg, 4.19 mmol) was added in a single portion. The Argonaut vessel was sealed and the resultant slurry was stirred at 500 RPM, the unit was repressurized with 300 psi of hydrogen, and heated to 50° C. Hydrogen uptake ceased in about 1.2-1.5 h to yield the title compound, which was used in the next step without further purification or isolation. HPLC-MS analysis of an aliquot showed only C9H19NO MS: (Cl): m/z 158 (M++1) |
With platinum(IV) oxide; hydrogen; In acetic acid; at 40℃; under 38011.4 Torr; for 24h; | To a solution of 3- (pyridin-4-yl) propan-1-ol (20.0 g, 0.15 mol) in AcOH (300 mL) was added PtO2 (2.5 g, 11.0 mmol) . The mixture was sealed and stirred at 40 under 735 psi hydrogen for 24h. After cooling to rt, the catalyst was filtered off and the filtrate was concentrated under reduced pressure. The crude was dissolved with DCM (1L) and organic phase was washed with sat. Na2CO3 (100 mL × 3) , dried over anhydrous Na2SO4, filtered and concentrated to afford 3- (piperidin-4-yl) propan-1-ol which was used in next step without purification. LRMS m/z (M+H) 144.1 found, 144.1 required. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With triethylamine; In dichloromethane; water; | EXAMPLE 105 To a stirred mixture of methylene chloride (400 ml) and water (40 ml) are added dropwise benzyloxycarbonyl chloride (100 g) and a solution of 3-(4-piperidyl)propanol (84 g) and triethylamine (65 g) in methylene chloride (100 ml) for 45 minutes at room temperature. After addition is completed, stirring is continued for further 1 hour. The methylene chloride layer is separated, washed with water, dried over anhydrous magnesium sulfate and concentrated under reduced pressure. Vacuum distillation of the oily residue is carried out to remove the low boiling material (50°-60° C./5 mmHg). 3-(1-Benzyloxycarbonyl-4-piperidyl)propanol (110 g) is obtained as a yellow oily residue. IR numaxneat cm-1: 3400(OH), 1680(C=O) |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With sodium hydroxide; potassium hydrogensulfate; In 1,4-dioxane; | b 3-[N-(tert-butoxycarbonyl)piperidin-4-yl]propanol A solution of 6 g of di(tert-butyl)carbonate in 20 ml of dioxan was introduced into a solution of 3.2 g of 3-(4-piperidinyl)propanol in 50 ml of dioxan containing 25 ml of a 2N aqueous solution of sodium hydroxide, cooled at 0° C. The mixture was allowed to react for 16 hours at room temperature. The solution was then evaporated and the residue was extracted with ethylether. The organic layer was washed with a 10percent solution of KHSO4 and then dried over MgSO4. The solvent was evaporated and the residue was chromatographied on silica gel (eluent: CH3 COOEt/cyclohexane:2/8-1/1:v:v). 3 g of the desired compound in the form of an oil were obtained. RMN (CDCl3, 200 MHz) 4.05 ppm (m, 2H); 3.6 (t, 2H); 2.64 (m,2H); 1.7 a 1.1 (m, 18H). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
88% | In dichloromethane; at 20℃; for 2h; | Preparation 144-(3-Aminopropyl)-piperidine-1-carboxylic acid tert-butyl ester(A). Preparation of 4-(3-hydroxypropyl)-piperidine-1-carboxylic acid tert-butyl ester; Di-tert-butyl dicarbonate (3.66 g, 16.8 mmol) is added to a stirred solution of 3-piperidin-4-yl-propan-1-ol (1.60 g, 11.2 mmol) in anhydrous dichloromethane (20 mL) at ambient temperature under nitrogen. The resultant mixture is allowed to stir for 2 hours. The mixture is directly subjected to chromatography purification on silica gel and eluted with MeOH in dichloromethane 0-3percent to give the title compound as a clear oil (2.40 g, 88percent yield). |
82% | In ethanol; | 1) Synthesis of 3-(1-tert-butoxycarbonyl-4-piperidyl)-1-propanol To a solution of 35.8 g (250 mM) of <strong>[7037-49-2]3-(4-piperidyl)-1-propanol</strong> in 500 ml of ethanol was added 54.6 g (250 mM) of di-tert-butyl dicarbonate dropwise and the mixture was stirred at room temperature for one hour. The solvent was then distilled off under reduced pressure and the residue was purified by column chromatography (ethyl acetate-hexane=1/1 ethyl acetate) to provide the title compound as light-yellow oil (50.2 g, 82percent). 1H-NMR (200 MHz, CDCl3) delta: 0.96-1.41 (m, 5H), 1.45 (s, 9H), 1.49-1.78 (m, 4H), 2.61-2.74 (m, 2H), 3.62 (t, J=6.4 Hz, 2H), 4.04-4.10 (m, 2H). |
With sodium hydroxide; In 1,4-dioxane; at 0 - 20℃; for 12h; | To a solution of 3- (piperidin-4-yl) propan-1-ol (8.1 g, 56.7 mmol) and 3M NaOH (100 mL) in dioxane (300 mL) was added a solution of Boc2O (15.0 g, 68.0 mmol) in dioxane (30 mL) dropwise at 0. After stirring at rt for 12 h, the solvent was removed under reduced pressure and the residue was dissolved in EtOAc (600 mL) . The organic phase was washed with sat. NH4Cl (30 mL) , NaHCO3 (30 mL) and brine (30 mL) , dried over anhydrous Na2SO4, filtered and concentrated to afford tert-butyl 4- (3-hydroxypropyl) piperidine-1-carboxylateas which was used in next step without purification. LRMS m/z (M-55) 188.1 found, 188.2 required. |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
With palladium 10% on activated carbon; hydrogen; acetic acid; at 20℃; under 760.051 Torr; for 6h; | General procedure: Compound 29 (30 mg, 0. 23 mmol, 1.0 eq of a solution of AcOH (5.6 mL) and 10percent Pd / C (1.2 g, 1.13 mmol, 5.0 eq) were stirred and subjected to reduction in a hydrogen atmosphere under balloon pressure at room temperature . After stirring at room temperature for 6 hours, insoluble matter was removed by Celite elution using MeOH and then washed with Et 2 O. Compound 30 (18.5 mg, 0.13 mmol, yield 57percent) was obtained as a white solid from the filtrate. |
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