An efficient synthesis of 3-arylmethyl-7, 8-dihydro-6H-chromene-2, 5-diones from Baylis–Hillman adduct acetates under solvent-free conditions

~87%

~79%

~88%

~10%

~86%

~71%

~77%

~89%

~93%

~11%

~89%

~82%

~83%

~80%

~77%

~78%

~82%

~89%

~58%