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.
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.