A convenient phosphoryloxylactonization of pentenoic acids with (diacetoxyiodo)benzene

The convenient one-pot method for phosphoryloxylactonization of alkenoic acids was reported: when (diacetoxyiodo)benzene, various 4-pentenoic acids and phosphates were mixed in CH3CN at room temperature, phosphoryloxylactones were obtained in good to excellent yields in short times, some had two diastereoisomers.