METHOD OF EXTRACTING ACIDS FROM CHEMICAL REACTION MIXTURES USING NONPOLAR AMINES Russian patent published in 2011 - IPC C07F9/22 C07B63/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of extracting acids from reaction mixtures containing at least one desired product with insignificant solubility in water using at least one nonpolar amine as an auxiliary base, involving steps a) reaction of the auxiliary base with acid to form a salt; b) reacting the salt formed at step (a) with another base which absorbs acid when freeing the auxiliary base; c) extraction of the mixture obtained at step (b) with water or aqueous medium, where the salt of another base dissolves in the aqueous phase and the desired product or solution of the desired product in a suitable solvent and the auxiliary base form at least one separate non-aqueous phase; and d) distillation of at least a portion of the inert solvent from at least one non-aqueous phase obtained at step (c), thereby forming two immiscible liquid phases. The invention also relates to a method of producing triamides of thiophosphoric acid involving the steps given above.

EFFECT: extracting acids from chemical reaction mixtures; producing triamides of thiophosphonic acid.

7 cl, 2 ex