Chloride → 1-(N,N-dimethylcarbamoyl)-3-adamantanol

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Reaction Steps

In an atmosphere of nitrogen, 10 mmole of 1-carboxy-3-adamantanol obtained by the method of Example 2 was dissolved in 10 ml of N,N-dimethylformamide (DMF). To the mixture, 15 mmole of tionyl chloride was added dropwise over 30 minutes while heating the mixture to the reflux temperature so as to begin to reflux at about the time the addition is finished. After refluxing for 2 hours, the mixture was cooled. To the mixture, 25 mmole of dimethylamine was added dropwise over 30 minutes while keeping the temperature of the solution at 10° C. or below, and the mixture was stirred for another 2 hours. As a result, the conversion of 1-carboxy-3-adamantanol was 99%, and 1-(N,N-dimethylcarbamoyl)-3-adamantanol (yield 95%) was formed.

Provenance & Evidence