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Xanthan Sulfuric Acid: An Efficient Bio‐supported and Recyclable Solid Acid Catalyst for the Synthesis of 2‐Aryl Thiadiazolo Benzimidazoles
Author(s) -
Kuarm B. Suresh,
Janardan B.,
Crooks Peter A.,
Rajitha B.
Publication year - 2012
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201100137
Subject(s) - chemistry , sulfuric acid , solid acid , catalysis , aryl , organic chemistry , alkyl
Xanthan sulfuric acid is an efficient solid acid catalyst for the preparation of 2‐aryl benzimidazoles in excellent yields. This method is applicable for the reaction of benzo[ c ][1,2,5]thiadiazole‐4,5‐diamine with aldehydes by simple physical grinding at room temperature. The salient features of the present methodology is cheaper process, easy synthesis of stable catalyst and the catalyst can be easily recycled without significant loss of activity.