Reactions of triaryl selenonium salts and diaryl selenoxides with phenyllithium: First detection of tetraaryl selenuranes [10-SE-4(C4)] by 77SE, 1H, and 13C NMR

Article abstract of DOI:10.1016/S0040-4039(00)79716-4

First evidence for the formation of tetraaryl selenuranes was presented in the reaction of triphenyl selenonium salt or 2,2'-biphenylylene phenyl selenonium salt with phenyllithium by ⁷⁷Se, ¹H, ¹³C and CH-COSY NMR studies at low temperature. These selenuranes were also formed in the reactions of the corresponding selenoxides with two equivalents of phenyllithium.