Thionyl Chloride → HCID 20745768, compound

Participants

Reaction Steps

A solution containing 3-methyl-3-(4-methylphenyl)butyric acid (8.5 g, 44.2 mmol) and anhydrous DMF (5 drops) in anhydrous benzene (110 mL) was refluxed under nitrogen as thionyl chloride (8.1 mL, 110 mmol)was added dropwise under nitrogen. The solution was refluxed an additional 15 h after complete addition of thionyl chloride. The dark brownish reaction mixture was allowed to cool to room temperature and concentrated under vacuum. TLC analysis of the crude material showed complete disappearance of the starting material. Presence of DMF was evident from the proton NMR. The crude material, 3-methyl-3-(4-methylphenyl)butyric acid chloride (305) (about 10 g), thus obtained was used in the next step without further purification.

Provenance & Evidence