反应详情

A solution of 18 g. (0.071 mole) of 3-methylmercapto-5H-dibenzo[a,d]cyclohepten-5-ol in 90 ml. of dry dioxane is cooled in an ice-bath and saturated with dry hydrogen chloride. A solid separates and when precipitation appears to be complete, the mixture is stirred with 150 ml. of petroleum ether and the product collected, washed with petroleum ether, and dried in a vacuum desiccator over potassium hydroxide. The yield of 5-chloro-3-methylmercapto-5H-dibenzo[a,d]cycloheptene is 16 g. (84%), m.p. 135°-138° C. The melting point is unchanged by recrystallization from cyclohexane.

1. customA solid separates and when precipitation
2. customof petroleum ether and the product collected
3. washwashed with petroleum ether
4. dry with materialdried in a vacuum desiccator over potassium hydroxide
5. customThe melting point is unchanged by recrystallization from cyclohexane