METHOD OF PRODUCING ESTERS OF ALPHA-HYDROXYCARBOXYLIC ACIDS IN GAS PHASE Russian patent published in 2019 - IPC C07C67/20 C07C69/675

Abstract RU 2687751 C2

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing esters of alpha-hydroxycarboxylic acids with high selectivity by alcoholysis of the corresponding alpha-hydroxycarboxamide in the gaseous phase over a heterogeneous catalyst, where molar ratio of alcohol to alpha-hydroxycarboxamide is 2–25 mol/mol, and conversion is carried out in presence of 0.01–10 mol / mol of water with respect to alpha-hydroxycarboxamide.

EFFECT: disclosed is a method for synthesis of esters of alpha-hydroxycarboxylic acids in gas phase.

5 cl, 5 tbl, 19 ex

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RU 2 687 751 C2

Authors

Krill, Steffen

Ait Aissa, Belaid

May, Alexander

Gromping, Matthias

Dates

2019-05-16—Published

2015-07-23—Filed