Auguste Georges Darzens (1867-1954)

French chemist born in Moscow, professor at the École Polytechnique in Paris. He combined academic research with work for the perfume industry, for which he prepared many odorous aldehydes and ketones.

In 1904 he described the condensation of α-halo esters with aldehydes and ketones to give glycidic esters, the Darzens condensation, which he used precisely to lengthen the chains of carbonyl compounds by one carbon.

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