Pyridine → Carbamic acid, ((bis(2-cyanoethyl)amino)thio)methyl-, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester

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Reaction Steps

4.4 g (0.02 mole) of 2,3-dihydro-2,2-dimethylbenzofuran-7-yl N-methyl-carbamate, 3.8 g (0.02 mole) of bis(cyanoethyl)aminosulfenyl chloride obtained in Example 31, and 4.7 g (0.06 mole) of pyridine were dissolved in 35 ml of methylene chloride, and the resulting solution was stirred for 20 hours at 25° to 30° C. After completion of the reaction, the reaction solution was washed successively with water, diluted hydrochloric acid and water. The methylene chloride layer was dried over sodium sulfate 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. Yield: 6.2 g (82.7%).

Provenance & Evidence