SEARCH Articles Figures Tables Chromone Chromone 3- methyl-, ring synthesis Chromone ring synthesis Chromone-2-carbonyl chlorides synthesis Chromones Chromones Kostanecki-Robinson synthesis Chromones Pechmann coumarin synthesis Chromones ring synthesis Chromones, synthesis Chromonic ROBINSON-ALLAN-KOSTANECKI Chromone Synthesis Ring Synthesis of Chromones Simonis chromone synthesis Synthesis of Benzopyryliums, Chromones, Coumarins and Isocoumarins