p-Toluenesulfonic acid → Difluoromethoxy-(5-propyl-1,3-dioxan-2-yl)-benzene
Reaction equation
[F:1][CH:2]([F:12])[O:3][C:4]1[CH:11]=[CH:10][C:7](C=O)=[CH:6][CH:5]=1.C([C:15]([OH:19])([OH:18])CC)C.[CH3:20][C:21]1[CH:22]=[CH:23][C:24](S(O)(=O)=O)=C[CH:26]=1>C1(C)C=CC=CC=1>[F:12][CH:2]([F:1])[O:3][C:4]1[CH:5]=[CH:6][CH:7]=[CH:10][C:11]=1[CH:15]1[O:19][CH2:26][CH:21]([CH2:22][CH2:23][CH3:24])[CH2:20][O:18]1Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
17.2 g of p-difluoromethoxybenzaldehyde (commercially available from Fluorochem. Ltd. (GB)), 10.4 g of ethylpropanediol and 0.2 g of p-TsOH are heated to boiling for 2 hours in 100 ml of toluene. After evaporation of the solvent, the mixture is worked up as usual.