反应详情

2.2 g (0.01 mole) of 2,3-dihydro-2,2-dimethylbenzofuran-7-yl N-methyl-carbamate, 2.4 g (0.01 mole) of N-ethoxycarbonyl-N-ethoxycarbonylmethylaminosulfenyl chloride obtained in Example 17, and 3.2 g (0.04 mole) of pyridine were dissolved in 30 ml of chloroform, and the resulting solution was stirred for 24 hours at 20° to 30° C. After completion of the reaction, the reaction solution was washed successively with water, diluted hydrochloric acid and water. The chloroform layer was dried and concentrated under reduced pressure to obtain an oily product which was almost entirely composed of the desired product although containing small amounts of the starting materials and impurities.

1. customAfter completion of the reaction
2. washthe reaction solution was washed successively with water, diluted hydrochloric acid and water
3. dry with materialThe chloroform layer was dried
4. concentrationconcentrated under reduced pressure
5. customto obtain an oily product which