Unprecedented Ring Transformation of an α,α′-Monosubstituted 2,4,5-Triphenylpyrylium Salt with η3-Phosphines: Efficient Synthesis of Aryl- and Alkylphosphonium Triphenylcyclopentadienylides
摘要:
The ring transformation of the alpha reactive 2 4 5 triphenylpyrylium salt 1 with eta(3) phosphines to the aryl and alkylphosphonium triphenylcyclopentadienylides 5 is reported The mechanism of this unprecedented transformation might involve tandem conjugate addition and intramolecular Wittig cyclization
Unprecedented Ring Transformation of an α,α′-Monosubstituted 2,4,5-Triphenylpyrylium Salt with η<sup>3</sup>-Phosphines: Efficient Synthesis of Aryl- and Alkylphosphonium Triphenylcyclopentadienylides
作者:Tao Xu、Wei-tao Gong、Jun-wei Ye、Yuan Lin、Gui-ling Ning
DOI:10.1021/om100872f
日期:2010.12.27
The ring transformation of the alpha reactive 2 4 5 triphenylpyrylium salt 1 with eta(3) phosphines to the aryl and alkylphosphonium triphenylcyclopentadienylides 5 is reported The mechanism of this unprecedented transformation might involve tandem conjugate addition and intramolecular Wittig cyclization
Synthesis and structures of molybdenum complexes of aryl- and alkylphosphonium triphenylcyclopentadienylide ligands
作者:Wei-tao Gong、Duo Na、Hassan Mehdi、Jun-wei Ye、Gui-ling Ning
DOI:10.1016/j.jorganchem.2014.09.006
日期:2014.12
characterized on the basis of 1HNMR, 13C NMR, 31P NMR spectroscopies, elemental analyses, and X-ray crystallography. The structures of the free ligands and their molybdenum complexes I, II, and III were compared with the reported analogouscompound (C5H4PMePh2) and its complex (η5-C5H4PMePh2)Mo(CO)3. The IR spectrum of complex in which values of ν(CO) and the M−C5 (centroid) bond lengths showing strong evidences