Reductive cyclization of γ,δ-unsaturated selenothioic acid S-esters leading to tetrahydroselenophenes
Abstract
Reductive cyclization of γ,δ-unsaturated selenothioic acid S-esters with NaBH4 or LiAlH4 proceeds viaδ,ε-unsaturated selenols to afford tetrahydroselenophenes in good to high yields.