Journal
TETRAHEDRON LETTERS
Volume 46, Issue 37, Pages 6345-6348Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2005.07.026
Keywords
1,2-diketones; quinoxalines; iodine; catalytic amount; ecofriendly process
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Various biologically important quinoxaline derivatives were efficiently synthesized in excellent yields using inexpensive, nontoxic, and readily available bench top chemical, iodine in catalytic amount (10 mol %). Besides this, a systematic study was carried out to evaluate parameters such as solvent and catalyst loading. Several aromatic as well as aliphatic 1,2-diketones and aromatic 1,2-diamines, such as substituted phenylene diamines, tetra amines were further subjected to condensation using catalytic amounts of iodine to afford the products in excellent yield. (c) 2005 Published by Elsevier Ltd.
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