2-(Dimethylamino)ethanol → 2-(N,N-dimethylamino)-ethyl 1-pyrrolidineacetate

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To a mixture of 80 g (0.51 mol) of ethyl 1-pyrrolidineacetate and 0.5 g of sodium hydride (in the form of a 60% by weight suspension in mineral oil) was added 48 g (0.54 mol) of 2-(N,N-dimethylamino)ethanol. The mixture was purged with nitrogen gas, heated gradually and then maintained at about 150° C. while collecting the ethanol by-product in a Dean-Stark trap. The liquid reaction product was distilled at 85° C. at a pressure of 100 μmHg to provide 2-(N,N-dimethylamino)-ethyl 1-pyrrolidineacetate. The structure of the product was confirmed by nuclear magnetic resonance and infrared spectral analysis.

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