Synthesis of Alkoxymethyl Groups Containing Isoxazoles and Chromones

An oxocarbenium ion mediated cyclization of (Z)-1,3-diaryl-prop-2-yn-1-one O-methyloximes and 3-arylprop-2-yn-1-(2-methoxyphenyl)-1-ones resulted in regioselective formation of functionalized isoxazoles and chromones, respectively. Alkoxy(aryl) methyl group containing compounds were obtained in good and high yields.