反应详情

A solution of 4,4'-dichlorobenzhydrol (Aldrich) (500 mg, 1.97 mmol), mercaptoacetic acid (181 mg, 1.97 mmol) and ρ-toluenesulfonic acid monohydrate (93 mg, 0.49 mmol) in 7 mL of toluene is stirred at room temperature for 2 hours followed by heating at 50°-60° C. for 1 hour. Upon cooling, the mixture is diluted with ethyl acetate, washed with water, brine, and dried over magnesium sulfate. The product is concentrated in vacuo to give [[bis-(4-chlorophenyl)methyl]thio]acetic acid as a pale yellow oil.

1. temperatureby heating at 50°-60° C. for 1 hour
2. temperatureUpon cooling
3. washwashed with water, brine
4. dry with materialdried over magnesium sulfate
5. concentrationThe product is concentrated in vacuo