METHOD FOR SELECTIVELY PRODUCING 2-NITROTHIOPHENE FROM THIOPHENE BY USING METAL-EXCHANGED CLAY CATALYST

摘要

PROBLEM TO BE SOLVED: To provide a gentle to environment method for producing 2- nitrothiophene from thiophene in 100% selectivity and in a high yield by using a metal ion-exchanged clay catalyst and nitric acid without using acetic anhydride. SOLUTION: This method for producing 2-nitrothiophene is provided by nitrating thiophene by using nitric acid in the presence of a solid acid catalyst selected from a montmorillonite clay catalyst and metal ion-exchanged K10 montmorillonite clay catalyst, and recovering 2-nitrothiophene by concentrating the reaction mixture after separating the catalyst. COPYRIGHT: (C)2004,JPO