The Diels-Alder cycloaddition, an intriguing problem in organic sonochemistry

摘要: Abstract Sonochemical Diels-Alder cycloadditions are discussed with the help of published examples and recent data from authors' laboratories. Most significant results, in terms rate and/or yield increases, obtained when quinones dienophiles. A possible mechanism implies a redox process between diene dienophile, giving radical-ion intermediates. Convergent lead to conclusion that other cases, where concerted (or closely related) is probable, sonochemical effect should remain modest, making necessary re-evaluation physical effects cavitation.