Synthesis of 7-Aminocoumarin by Buchwald–Hartwig Cross Coupling
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http://dspace.mit.edu/handle/1721.1/69559#files-area
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Direct amination of phenols under metal-free conditions
By Yu, Jianzhong et al
From Synlett, 24(11), 1448-1454; 2013
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Preparation of amino- and formylamino-coumarins by selective hydrogenation of nitrocoumarins
By Lin, Shaw-Tao et al
From Journal of Chemical Research, Synopses, (9), 372-3; 1995