Cyclobutadiene complexes .12. Alkynyl-substituted tricarbonyl(cyclobutadiene)iron complexes: Stille coupling of iodocyclobutadiene complexes with stannylalkynes

被引:42
作者
Bunz, UHF
WiegelmannKreiter, JEC
机构
[1] Max-Planck-Insihut Für Polymerforschung, D-55021 Mainz
关键词
alkynylation; palladium catalyzed coupling reactions; cyclobutadiene complexes; iron complexes; cobalt complexes; modular chemistry;
D O I
10.1002/cber.19961290709
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The synthesis of mono-, di-, tri- and tetraalkynylated tricarbonyl(cyclobutadiene)iron complexes is accomplished by a repetitive metalation/iodination/coupling sequence. Application of this sequence leads to the synthesis of oligomeric cyclobutadiene complexes with various topologies, inter alia to the synthesis of a perethynylated dimer 24. Alternatively a one-step coupling procedure (Stille-Farina) has been used to synthesize tetraalkynylated tricarbonyl(cyclobutadiene)irons 26.
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页码:785 / 797
页数:13
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