Thionyl Chloride → 3,3-Diphenylpropionyl chloride
Reaction equation
[C:1]1([CH:7]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH2:8][C:9](O)=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.S(Cl)([Cl:20])=O>N1C=CC=CC=1>[C:1]1([CH:7]([C:12]2[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=2)[CH2:8][C:9]([Cl:20])=[O:10])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
To a mixture of 3,3-diphenylpropionic acid (20 g, 88.4 mmol) and thionyl chloride (7.74 mL, 106.1 mmol) is added 5 drops of pyridine. The mixture is stirred at room temperature overnight (15 hours), and then distilled in vacuo to afford a light yellow oil, 17.88 g. The title compound forms as a light yellow solid when the oil is refrigerated overnight; mp 41°-43° C.