FIELD: organic chemistry.
SUBSTANCE: invention relates to a method for producing oxalic acid amidoesters of general formula I. Alkyl-N-2-hydroxyethyl oxamates of formula I are used in the technology of medicines and are used as agrochemical preparations. The method for producing amidoesters of oxalic acid involves the interaction of symmetrical oxalates of the general formula AlkOC(O)-C(O)OAlk, where Alk represents ethyl, propyl, isopropyl, sec-butyl, isobutyl, with ethanolamine at a temperature in the reaction zone not higher than 5°C and is characterized by the fact that the reaction is carried out under microflow conditions using a system consisting of a combination of a metal T-shaped mixer and a stainless steel coil with an internal diameter of 0.5-5 mm and a length of up to 80-100 mm and two piston pumps for independent supply of oxalic acid diester solution and ethanolamine solution into the system in a flow ratio of five to one.
EFFECT: continuous process for obtaining target products.
1 cl, 5 ex
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