Synthese et reactivite d'un complexe diene-fertricarbonyle derive du phenyl-1-dimethyl-3,4-phosphole |
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| Authors: | Catherine C Santini François Mathey |
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| Institution: | Laboratoire CNRS-SNPE, 2-8 rue Henry Dunant, BP 28, 94320 Thiais France |
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| Abstract: | The complex (DMPP)Fe2(CO)7 in which DMPP (1-phenyl-3,4-dimethylphosphole) is η4-coordinated with Fe(CO)3 through its diene and η1-coordinated with Fe(CO)4 through its phosphorus atom is selectively decomplexed at phosphorus to give (DMPP)Fe(CO)3 by reaction with AlCl3 followed by NH4OH. This new η4-complex (DMPP)Fe(CO)3 can be oxidized, sulfurized and quaternized at phosphorus by H2O2, S8, and PhCH2Br and MeI, respectively, as an ordinary phosphine without decomplexation of the diene. As a free phosphole, this complex also gives a ring-expanded product by reaction with benzoyl chloride, water and Et3N. In the presence of some metallic salts such as (PhCN)2PdCl2, it loses CO to give the bimetallic sandwich (DMPP)Fe(CO)2]2. It can also give some new bimetallic complexes such as (DMPP)Fe(CO)3]W(CO)5 by complexation of the phosphorus lone pair by W(CO)5(THF). |
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| Keywords: | To whom correspondence should be addressed |
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