Diethyl Ether → N,N-dimethyl-N-geranyloxycarbonylmethyl-N-(3-(dodecanoylamino)propyl)ammonium chloride

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A 22.76 g (0.080 mol) portion of N-dodecanoyl-N′,N′-dimethyl-1,3-diaminopropane and 120 ml of diethyl ether were put into a flask, and 18.46 g (0.080 mol) of geranyl chloroacetate was added thereto at 25° C. spending 5 minutes. The reaction mixture was stirred at 25° C. for 24 hours, and disappearance of the most part of chloroacetate was confirmed by 1H-NMR. Next, the reaction mixture was slowly added dropwise to 600 ml of hexane which was ice-cooled and vigorously stirred, spending 10 minutes, to effect precipitation of the product as a white solid. Thereafter, in the same manner as described in Inventive Example 1, the title compound (to be referred to as betaine ester (3) hereinafter) was obtained as a light yellow viscous oil. Yield 38.50 g (0.0747 mol; yield 93.4%).

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