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

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...

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Hauptverfasser:	RANGANATH KALLURI VENKATA SRI, KANTAM MANNEPALLI LAKSHMI, CHOUDARY BOYAPATI MANORANJAN, RAMPRASAD KOMPELLA VISHWESHWAR
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY GENERAL METHODS OF ORGANIC CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	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