Acetic acid, cyanoethyl ester hydrolysis

These compounds are prepared starting from chloroace-tic acid or its ethyl ester. For chains longer than acetic, cyanoethylation and hydrolysis of the nitrile obtained leads to the propionic chain, alkylation with ethyl 4-bromobuty-rate and saponification leads to the butyric chain. The propanesulfonic chains are particularly accessible by means of ring opening of propane-sultone. 

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