METHOD FOR SYNTHESIS OF DITHIINE-TETRACARBOXY-DIIMIDES Russian patent published in 2016 - IPC C07D495/14

Abstract RU 2574393 C9

FIELD: chemistry.

SUBSTANCE: invention relates to a novel method for synthesis of dithine-tetracarboxy-diimides of general formula (I) , wherein R1 and R2 simultaneously denote methyl, characterised by that, (A) dichloromaleic acid imides of formula (VI), wherein R denotes R1 or R2, react with an inorganic sulphide or hydrosulphide in a solvent or mixture of solvents in a molar ratio of 0.2-0.95 mol sulphide or hydrosulphide per mole of dichloromaleic acid imide of formula (VI), and (B) the reaction product, which consists of a mixture of compounds of formula (I) and polymer compounds of general formula (VII) wherein R independently denotes R1 or R2, n is an integer from 1 to 50, is heated in a diluent.

EFFECT: high output.

5 cl, 2 dwg, 9 ex

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RU 2 574 393 C9

Authors

Khimmler Tomas

Kaussmann Martin

Dates

2016-02-10—Published

2011-05-16—Filed