Reaction of 3-tosyloxy- or 3-mesyloxyflavones with ammonia or primary amines proceeded to give the corresponding 3-aminoflavones in high yields. 3-Aminoluteorin was efficiently prepared from rutin using this method.
of different monobromoor monochloroflavones with primary and secondary alkylamines and aniline derivatives by Buchwald–Hartwigreaction. The influence of the phosphine ligands used is described. The use of amino acid derivatives as a nitrogen source is also demonstrated. This latter reaction allows the synthesis of unique flavone–amino-acid conjugates.