First detection of 2,2′-biphenylylenediphenylsulfurane and -selenurane [10-M-4(C4), M = S, Se] by low temperature NMR experiments and isolation of the tellurane
摘要:
Formation of 2,2'-biphenylylenediphenylsulfurane and -selcnurane war detected in !he reactions of 2,2'-biphenylylenephenylchnlcogenium compounds with phenyllithium by H-1, C-13, Se-77, and CH-COSY NMR studies at low temperature. isolation of the tellurane (C) was reported as an example of the tellurane bearing four carbon ligands.
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
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 Se-77, H-1, C-13 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.