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Chemical Structure| 94759-32-7 Chemical Structure| 94759-32-7

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Chemical Structure| 94759-32-7

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Product Details of [ 94759-32-7 ]

CAS No. :94759-32-7
Formula : C14H21NO3S
M.W : 283.39
SMILES Code : CC1=CC=C(S(=O)(OCC2CN(C)CCC2)=O)C=C1
MDL No. :MFCD21097936

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Application In Synthesis of [ 94759-32-7 ]

* 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.

  • Downstream synthetic route of [ 94759-32-7 ]

[ 94759-32-7 ] Synthesis Path-Downstream   1~2

  • 1
  • [ 7583-53-1 ]
  • [ 98-59-9 ]
  • [ 94759-32-7 ]
YieldReaction ConditionsOperation in experiment
99% With dmap; triethylamine; In dichloromethane; at 20℃; for 2h; Toluene-4-sulfonic acid 1-methyl-piperidin-3-ylmethyl ester A mixture of 2.07 g (16 mmol) 1-methyl-3-piperidinemethanol, 3.35 g (18 mmol) p-toluensulfonyl chloride, 0.58 g (5 mmol) 4-dimethylaminopyridine and 2.23 mL (16 mmol) NEt3 in 30 mL DCM was stirred for 2 h at room temperature. The mixture was washed with water and evaporated to dryness to yield 4.5 g (99%) of the title compound as yellow oil which was used without further purification. MS(m/e): 284.1 (MH+).
58% With triethylamine; In dichloromethane; at 0 - 20℃; for 6h; To a stirred solution of 1 -methyl-3 -hydroxymethylpiperidine (2 g, 15.5 mmol) in DCM (30 mL) at 0C, triethylamine (4.9 g, 46 mmol) and tosyl chloride (4.41 g, 23.2 mmol) were added and allowed the mixture to stir at room temperature for 6 h. After completion, the reaction mixture was diluted with water (30 mL) and extracted with DCM (3 x 30 mL). The combined organic layer was dried over sodium sulfate and concentrated. The resulting crude was purified by flash chromatography (silica gel, 12 g cartridge) using 0-20% EtOAc in hexanes as eluent to obtain (l-methylpiperidin-3-yl)methyl 4- methylbenzenesulfonate (Yield: 2.50 g, 58%) as white solid. LCMS (ES) m/z = 284.36 [M+H]+; NMR (400 MHz, DMSO-d6) d ppm: 0.87-0.95 (m, 1H), 1.33-1.50 (m, 4H), 1.63 (m, 1H), 1.80-1.85 (m, 2H), 2.06 (s, 3H), 2.42 (s, 3H), 2.46-2.52 (m, 1H), 3.90 (m, 2H), 7.48 (d, J= 8.0 Hz, 2H). 7.78 (d, J= 8.0 Hz, 2H).
With dmap; In dichloromethane; at 20℃; for 12h;Cooling with ice; 10.0 g of 1-methyl-3-piperidinemethanol are dissolved in 100 ml of dichloromethane, and 9.46 g of 4-dimethylaminopyridine and 15.5 g of p-toluenesulfonyl chloride are added with ice cooling The reaction solution is stirred at room temperature for twelve hours and then washed with saturated NaHCO3 solution and dried over MgSO4, and the solvent is removed under reduced pressure. The resulting residue is dissolved in 150 ml of acetone, and 39.5 g of sodium iodide are added. The reaction mixture is heated at the boil under reflux for two hours. The solvent is then removed under reduced pressure, and the residue is taken up in 300 ml of ethyl acetate and washed twice with in each case 100 ml of water. The organic phase is dried over MgSO4 and then concentrated under reduced pressure. This gives 9.4 g of 3-iodomethyl-1-methylpiperidine. C7H141N (239.10), LCMS (ESI): 240.0 (M+H+).
With triethylamine; In dichloromethane; at 20℃; for 5h; Into a 250 mL round bottom flask containing a solution of (l-methylpiperidin-3- yl)methanol (8.0 g, 62 mmol) in dichloromethane (80 mL) was added triethylamine (17 mL, 125 mmol) followed by the addition of p-toluenesulfonyl chloride (14.2 g, 75 mmol) and the reaction mixture stirred at room temperature for 5 h. The reaction mixture was diluted with dichloromethane and washed with water and brine solution. The organic fraction was dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The crude was purified by flash chromatography eluting with methanol in dichloromethane (5-7%) to afford (1-methylpiperidin-3-yl)methyl 4-methylbenzenesulfonate as a liquid. 1H NMR (DMSO-d6; 400 MHz): delta 7.80 (d, J = 7.8 Hz, 2H), 7.11 (d, J = 7.8 Hz, 2H), 4.01-3.91 (m, 2H), 3.21-3.16 (m, 2H), 2.64-2.58 (m, 2H), 2.43 (s, 3H), 2.42-2.29 (m, 1H), 2.09 (s, 3H), 1.77-1.74 (m, 2H), 1.62- 1.59 (m, 2H). MS calc'd [M+H]+ 284.1, found 284.4.

  • 2
  • [ 7583-53-1 ]
  • [ 94759-32-7 ]
YieldReaction ConditionsOperation in experiment
85% With triethylamine; In dichloromethane; Step A Toluene-4-sulfonic acid 1-methyl-piperidin-3-ylmethyl Ester (1-Methyl-piperidin-3-yl)-methanol (1.0 mL, 7.75 mmol, 1 eq) was suspended in dry CH2Cl2 (20 mL) under Ar. Triethylamine (1.9 mL, 14 mmol, 2.0 eq) was added followed by thc addition of toluencsulfonyl chloride (1.49 g, 7.8 mmol, 1.0 eq.). The reaction mixture was stirred at room temperature for 18 hours, and then quenched with aqueous sodium bicarbonate. The aqueous layers were extracted several times with CH2Cl2, and the combined organic layers were dried over Na2SO4. After removing the solvent, the residue was loaded on silica gel and chromatographed (ethyl acetate/methanol/triethylamine 87/10/3). 1.85 g (85percent yield) of the amine tosylate was obtained as a yellow oil.
 

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