METHOD FOR PRODUCING BIPHENYL-3, 4, 3', 4'-TETRACARBOXYLIC ACID
PROBLEM TO BE SOLVED: To provide a method for producing biphenyl-3, 4, 3', 4'-tetracarboxylic acid, by which the objective acid can be produced from inexpensive raw materials in an industrially high yield in excellent productivity. SOLUTION: This method for producing the biphenyl-3, 4, 3...
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