Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1998-11-09
2000-03-07
Killos, Paul J.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C07C20500
Patent
active
060342870
ABSTRACT:
The present invention relates to a process for the production of nitroarenes with high para-selectivity from monosubstituted aromatic hydrocarbons using aluminosilicates as catalysts, which comprises nitration of monosubstituted aromatic hydrocarbons using aluminosilicates of different ratios wherein Si/Al ranges between 5 to 1000 and the said aluminosilicates being manifested in the form of variety of zeolites and K10 montmorillonite as catalysts using nitric acid in the molar ratio of nitric acid to monosubstituted aromatic hydrocarbons ranging between 0.25 to 2.5 at a temperature in the range of 30-160.degree. C. for a period ranging between 0.25 to 3.0 h and followed by continuous removal of water formed from the reaction mixture with a Dean-Stark apparatus and recovery of the product mixture by concentration of the reaction mixture after separation of the catalyst by filtration.
REFERENCES:
patent: 5004846 (1991-04-01), Sato et al.
Jounal of Organic Chemistry 1994, 59, 4939-4942.
Choudary Boyapati Manoranjan
Kantam Mannepalli Lakshmi
Prasad Kompella Vishweshwar Ram
Raghavan Kondapuram Vijaya
Rao Kottapalli Koteswara
Coucil of Scientific and Industrial Research
Killos Paul J.
Parsa J.
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