Z -selective dimerization of terminal alkynes by a (PNNP)Fe II complex.
- Resource Type
- Academic Journal
- Authors
- Stevens JE; Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA. thomasc@chemistry.ohio-state.edu.; Miller JD; Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA. thomasc@chemistry.ohio-state.edu.; Fitzsimmons MC; Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA. thomasc@chemistry.ohio-state.edu.; Moore CE; Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA. thomasc@chemistry.ohio-state.edu.; Thomas CM; Department of Chemistry and Biochemistry, The Ohio State University, 100 W. 18th Ave., Columbus, OH 43210, USA. thomasc@chemistry.ohio-state.edu.
- Source
- Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 9610838 Publication Model: Electronic Cited Medium: Internet ISSN: 1364-548X (Electronic) Linking ISSN: 13597345 NLM ISO Abbreviation: Chem Commun (Camb) Subsets: PubMed not MEDLINE; MEDLINE
- Subject
- Language
- English
A tetradentate bis(amido)bis(phosphine) Fe II complex, (PNNP)Fe, is shown to activate the terminal C-H bond of aryl alkynes across its Fe-N amide bonds. (PNNP)Fe is also shown to catalytically dimerize terminal aryl alkynes to produce 1,3-enynes with Z : E ratios as high as 96 : 4 with yields up to 95% and loadings as low as 1 mol% at 30 °C in 2 h. A plausible metal-ligand cooperative mechanism invoking a vinylidene intermediate is proposed.