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A convenient and efficient approach for difluoroalkyl-containing g-butyrolactones via the radical addition reaction of iododifluoromethyl ketones with 4-pentenoic acids initiated by AIBN in CH3 CN at60 8C was reported. Various difluoroalkyl-containing d-valerolactones were also synthesized under this reaction conditions.
A convenient and efficient approach for difluoroalkyl-containing g-butyrolactones via the radical addition reaction of iododifluoromethyl ketones with 4-pentenoic acids initiated by AIBN in CH3CN at60 8C was reported. Various difluoroalkyl-containing d-valerolactones were also synthesized under this reaction conditions .