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Synthesis of 4‐Aryl‐3‐Methyl‐1‐Phenyl‐1 H ‐Benzo[ h ]Pyrazolo[3,4‐ b ]Quinoline‐5,10‐diones Using Diammonium Hydrogen Phosphate as an Efficient and Versatile Catalyst in Water
Author(s) -
Wu LiQiang,
Dong RuoYi,
Yang ChunGuang,
Yan FuLin
Publication year - 2010
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.201000003
Subject(s) - chemistry , quinoline , aryl , hydrogen phosphate , medicinal chemistry , condensation , amine gas treating , phosphate , condensation reaction , hydrogen , organic chemistry , catalysis , alkyl , physics , thermodynamics
Abstract A simple and efficient synthesis of 4‐aryl‐3‐methyl‐1‐phenyl‐1 H ‐benzo[ h ]pyrazolo[3,4‐ b ]quinoline‐5,10‐diones has been accomplished by the one‐pot condensation reaction of 3‐methyl‐1‐phenyl‐1 H ‐pyrazol‐5‐amine, aldehydes and 2‐hydroxynaphthalene‐1,4‐dione in water in the presence of diammonium hydrogen phosphate.