1: 76 percent / pyridine / benzene / 1 h 2: 99 percent / n-Bu3SnH, AIBN / benzene / Heating; other Se-phenyl selenocarbonates; other solvent; other reaction time; regioselectivity; synthesis of γ- and δ-lactones View Scheme

1: 76 percent / pyridine / benzene / 1 h 2: n-Bu3SnH, AIBN / benzene / Heating; other Se-phenyl selenocarbonates; other solvent; other reaction time; regioselectivity; synthesis of γ- and δ-lactones View Scheme