4-Toluenesulfonyl chloride → HCID 59557780, compound

HRID 1175272Notes

Reaction equation

HRID 1175272 reaction equation
[CH3:1][C:2]1([O:5][CH2:6][CH2:7][OH:8])[CH2:4][CH2:3]1.[OH-].[Na+].[CH3:11][C:12]1[CH:17]=[CH:16][C:15]([S:18](Cl)(=[O:20])=[O:19])=[CH:14][CH:13]=1>O1CCCC1.ClCCl>[CH3:11][C:12]1[CH:17]=[CH:16][C:15]([S:18]([O:8][CH2:7][CH2:6][O:5][C:2]2([CH3:1])[CH2:4][CH2:3]2)(=[O:20])=[O:19])=[CH:14][CH:13]=1

Participants

6

Reactant 3

HCID 73974-Toluenesulfonyl chlorideHCID 14798Sodium HydroxideHCID 595577322-(1-Methylcyclopropoxy)ethanol

Product 1

HCID 59557780HCID 59557780, compound

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolventHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
2.5 °C

Procedure

To the crude 2-(1-methylcyclopropoxy)ethanol from the previous step (0.32 g) in a mixture of 4.6N sodium hydroxide (6.3 mL, 2.52 mmol) and tetrahydrofuran (3 mL) was added 4-methylbenzene-1-sulfonyl chloride (2.1 g, 11.2 mmol) in dichloromethane (6 mL) at 0-5° C. The solution was stirred for 3 h at 0-5° C., and then extracted with dichloromethane. The organic layer was washed with brine, dried over sodium sulfate, and concentrated to obtain crude product (100 mg), which was used in the next step without further purification.

Workup

  1. extractionextracted with dichloromethane
  2. washThe organic layer was washed with brine
  3. dry with materialdried over sodium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-5e06c27f152c4eb79598c4dd50732241
Source dataset
uspto-grants-2010_11
Patent number
US07838499B2

Reaction notes

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