Structure and Reactivity of Chromium(VI) Alkylidenes

Pengcheng Wu; Glenn P A Yap; Klaus H Theopold

doi:10.1021/jacs.8b04882

Structure and Reactivity of Chromium(VI) Alkylidenes

J Am Chem Soc. 2018 Jun 13;140(23):7088-7091. doi: 10.1021/jacs.8b04882. Epub 2018 Jun 5.

Authors

Pengcheng Wu¹, Glenn P A Yap¹, Klaus H Theopold¹

Affiliation

¹ Department of Chemistry and Biochemistry and Center for Catalytic Science and Technology , University of Delaware , Newark , Delaware 19716 , United States.

PMID: 29847922
DOI: 10.1021/jacs.8b04882

Abstract

Bis(arylimido)Cr(VI) dialkyls lacking β-hydrogen decompose by α-hydrogen abstraction and, upon trapping with triphenylphosphine, yield isolable alkylidene complexes. Two such complexes, namely (ArN)₂Cr═CHR(PPh₃) (R = ^tBu, SiMe₃), have been structurally characterized. The coordinatively unsaturated alkylidene intermediates are highly reactive; they effect C-H activation of saturated hydrocarbons and they react with olefins to produce metallacyclobutanes.

Publication types

Research Support, N.I.H., Extramural
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Alkenes / chemistry
Bridged Bicyclo Compounds, Heterocyclic / chemical synthesis
Chromium / chemistry*
Coordination Complexes / chemical synthesis
Coordination Complexes / chemistry*
Cyclization
Molecular Structure
Organometallic Compounds / chemical synthesis
Organometallic Compounds / chemistry*

Substances

Alkenes
Bridged Bicyclo Compounds, Heterocyclic
Coordination Complexes
Organometallic Compounds
Chromium

Abstract

Publication types

MeSH terms

Substances

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