METHOD FOR PRODUCING POLYVALENT METAL SALT OF SALICYLIC ACID DERIVATIVE

摘要

PROBLEM TO BE SOLVED: To provide a method for producing the highly pure polyvalent metal salt of a carbamate-substituted salicylic acid derivative, by which the polyvalent metal salt can be obtained in a high yield in a short time. SOLUTION: This method for producing the polyvalent metal salt of the carbamate-substituted salicylic acid derivative is characterized by reacting a polyvalent metal salt of salicylic acid with one of various chloroformate compounds in the presence of a basic compound in a solvent.