Journal
TETRAHEDRON LETTERS
Volume 52, Issue 27, Pages 3492-3495Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2011.04.121
Keywords
Animal Bone Meal; Benzimidazoles; Benzoxazoles; Benzothiazoles; Lewis acids; Air
Categories
Funding
- Hubert Curien Volubilis Program
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A library of benziondazoles, benzoxazoles, and benzothiazoles was efficiently synthesized by condensation of o-phenylenediamine, o-aminophenol, and o-aminothiophenol respectively with aromatic aldehydes in the presence of catalytic amounts of Animal Bone Meal (ABM) and Lewis acids doped ABMs. Reactions were conducted under reflux conditions in air. The remarkable features of this new protocol are high conversion, short reaction times, and cleaner reaction profiles, straightforward procedure, and reduction in catalyst toxicity. Published by Elsevier Ltd.
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