Issue 5, 2021

Reactivity of phospha–Wittig reagents towards NHCs and NHOs

Abstract

Phospha–Wittig reagents, RPPMe3 (R = Mes* 2,4,6-tBu3-C6H2; MesTer 2,6-(2,4,6-Me3C6H2)-C6H3; DipTer 2,6-(2,6-iPr2C6H3)-C6H3), can be considered as phosphine-stabilized phosphinidenes. In this study we show that PMe3 can be displaced by NHCs or NHOs. Interestingly, phosphinidene-like reactivity results in a subsequent C(sp2)–H activation of the exocyclic CH2 group in NHOs. This concept was further extended to allyl-apended NHOs, which resulted in phosphine-substituted allyl species.

Graphical abstract: Reactivity of phospha–Wittig reagents towards NHCs and NHOs

Supplementary files

Article information

Article type
Paper
Submitted
08 Jan 2021
Accepted
12 Jan 2021
First published
13 Jan 2021

Dalton Trans., 2021,50, 1838-1844

Reactivity of phospha–Wittig reagents towards NHCs and NHOs

P. Gupta, J. Siewert, T. Wellnitz, M. Fischer, W. Baumann, T. Beweries and C. Hering-Junghans, Dalton Trans., 2021, 50, 1838 DOI: 10.1039/D1DT00071C

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