Hypervalent Iodine Oxidation of 5-Acyl-α-Benzoyl-O-Hydroxy-Acetophenones: A Selective Synthesis of 2,5-Diacylcoumaran-3-Ones
摘要:
Oxidation of 5-acyl-alpha-benzoyl-o-hydroxyacetophenones 3a-e with (diacetoxyiodo)benzene in methanolic potassium hydroxide (DAB-KOH-MeOH) provides a selective synthesis of 2,5-diacylcoumaran-3-one 4a-e in good yield.