250691-17-9Relevant articles and documents
4 phosphoric acid ester salt tertiary annular cyanoamidines
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, (2017/02/24)
PROBLEM TO BE SOLVED: To provide a method for producing a quaternary cyclic amidine phosphoric acid ester salt in a short time.SOLUTION: The method for producing a quaternary cyclic amidine phosphoric acid ester salt comprises reacting an amine (A) represented by general formula (1), a salt (D) of a phosphoric acid ester (C) represented by general formula (2), and a diamine monoamide compound (E) represented by general formula (3) in the presence of a solvent (B) having a boiling point higher than the boiling points of the amine (A) and water and a solubility parameter of 8-25 (cal/cm)), and then causing a cyclization dehydration reaction by removing formed water to obtain a quaternary cyclic amidine phosphoric acid ester salt (F).