4-Toluenesulfonyl chloride → HCID 86642194, compound

HRID 1965292Notes

Reaction equation

HRID 1965292 reaction equation
[CH2:1]([O:8][CH2:9][O:10][C@@H:11]([CH3:14])[CH2:12][OH:13])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[C:15]1([CH3:25])[CH:20]=[CH:19][C:18]([S:21](Cl)(=[O:23])=[O:22])=[CH:17][CH:16]=1>ClCCl.N1C=CC=CC=1.C(OCC)(=O)C>[CH3:25][C:15]1[CH:20]=[CH:19][C:18]([S:21]([O:13][CH2:12][C@@H:11]([O:10][CH2:9][O:8][CH2:1][C:2]2[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=2)[CH3:14])(=[O:23])=[O:22])=[CH:17][CH:16]=1

Participants

6

Reactant 2

HCID 73974-Toluenesulfonyl chlorideHCID 6711346HCID 6711346, compound

Product 1

HCID 86642194HCID 86642194, compoundYield 85.6%

Reagents, catalysts & solvents 3

HCID 1049PyridineSolventHCID 6344DichloromethaneSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a stirred solution of (2S)-2-[(benzyloxy)methoxy]propan-1-ol (Banfi, L., et al., J. Org. Chem. (1984), 49:3784-90) (11.40 g, 0.058 mol) in dichloromethane (50 mL) and pyridine (20 mL) was added p-toluenesulfonyl chloride (11.0 g, 0.057 mol) at 0° C. The reaction mixture was stirred at ambient temperature for 20 h, diluted with ethyl acetate and washed with water, 5% hydrochloric acid solution, water and brine; dried over anhydrous sodium sulfate and filtered. The filtrate was concentrated in vacuo. The residue was purified by column chromatography to afford (S)-2-(benzyloxymethoxy)propyl 4-methylbenzenesulfonate (17.10 g, 84%): 1H NMR (300 MHz, CDCl3) δ 7.77 (d, J=8.3 Hz, 2H), 7.36-7.25 (m, 7H), 4.71 (s, 2H), 4.59-4.48 (m, 2H), 4.02-3.93 (m, 3H), 2.41 (s, 3H), 1.19-1.11 (m, 3H).

Workup

  1. washwashed with water, 5% hydrochloric acid solution, water and brine
  2. dry with materialdried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationThe filtrate was concentrated in vacuo
  5. customThe residue was purified by column chromatography

Sources & evidence

ORD record
ord-f519596adc2b4931b6e4ab8b830cd708
Source dataset
uspto-grants-2013_04
Patent number
US08415370B2

Reaction notes

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