Tungsten-Catalyzed Alkyne Metatheses in Transition-Metal Coordination Spheres: Versatile New Syntheses of Metallamacrocycles
作者:Eike B. Bauer、Slawomir Szafert、F. Hampel、J. A. Gladysz
DOI:10.1021/om030195u
日期:2003.5.1
The title reaction (10−15 mol % of (t-BuO)3W(⋮C-t-Bu), chlorobenzene, 80 °C) is applied to octahedral and square-planar 18- and 16-valence-electron rhenium, ruthenium, and platinumcomplexes with cis- or trans-Ph2P(CH2)6C⋮CCH3 ligands. NMR analyses show ca. 90−70% educt conversions, and 17-membered diphosphine chelates have been isolated in 59−47% yields and crystallographically characterized.
Olefin metatheses in metal coordination spheres: novel trans-spanning bidentate and facially-spanning tridentate macrocyclic phosphine complexes
作者:Eike B. Bauer、Johannes Ruwwe、Frank A. Hampel、Slawomir Szafert、J. A. Gladysz、José Miguel Martín-Alvarez、Thomas B. Peters、James C. Bohling、Tadeusz Lis
DOI:10.1039/b007405p
日期:——
The title reaction is applied to square-planar rhodium and
platinum complexes with trans
PPh2(CH2)6CHCH2
ligands, and square-planar platinum or octahedral tungsten complexes with
trans or facial
PPh[(CH2)6CHCH2]2
ligands. Ring-closing (poly)macrocyclizations occur.