Process for preparing alkali metal salts of L-ascorbic acid

摘要

Process for preparing alkali metal salts of ascorbic acid - "a process to prepare alkali metal salts of L-ascorbic acid, which comprises the following steps: a) esterificar acid 2 - ECTo - L - gulu00f3nico or acid diacetone - 2 - keto - L - gulu00f3nico with an alcohol (C ~ 1 ~ C ~ 10 ~ in the presence of an acid catalyst.(b) to rearrange the ester alkyl C ~ 1 ~ C ~ 10 ~ of the acid 2 - keto - L - gulu00f3nico in the presence of a alcu00f3xido C ~ 1 ~ C ~ 10 ~ alkali metal.It includes performing each step of the process (a) and (b) continuously.