p-Toluenesulfonic acid → HCID 89581112, compound
Reaction equation
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([CH:8]([CH3:12])[CH2:9][CH2:10][OH:11])=[CH:4][CH:3]=1.[O:13]1[CH:18]=[CH:17][CH2:16][CH2:15][CH2:14]1.C1(C)C=CC(S(O)(=O)=O)=CC=1>ClCCl>[Br:1][C:2]1[CH:3]=[CH:4][C:5]([CH:8]([CH3:12])[CH2:9][CH2:10][O:11][CH:14]2[CH2:15][CH2:16][CH2:17][CH2:18][O:13]2)=[CH:6][CH:7]=1Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
To the solution of 3-(4-bromophenyl)butan-1-ol (791 mg, 3.47 mmol) in dichloromethane (50 mL) was added 3,4-dihydro-2H-pyran (437 mg, 5.2 mmol) and p-toluenesulfonic acid (60 mg, 0.347 m mol), the solution was stirred for 12 hours at room temperature, then the solution was washed with water and dried with sodium sulfate, concentrated to give 2-(3-(4-bromophenyl)butoxy)-tetrahydro-2H-pyran (1.05 g, 97%).