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Improved reactivity of a cyclic 13/15 compound by increased steric demand

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Abstract

Herein we present the synthesis and characterization of the new four-membered Ga/P cycle [tBu2GaP(H)SitBu2Ph]2, which shows a cis/trans isomerization at ambient temperatures via a ring opening mechanism. The sterically demanding substituents on the phosphorus (-SitBu2Ph) and gallium (tBu) atoms lead to an unexpected reactivity towards bulky NHC ligands (IMes and IDipp). The resulting Lewis base stabilized monomeric 13/15 compounds feature an unusual binding mode of the carbene ligand. The ring opened state also enables a masked flp reactivity, which is shown by a reaction with the polar multiple bond in Ph–NCO.

Graphical abstract: Improved reactivity of a cyclic 13/15 compound by increased steric demand

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Publication details

The article was received on 16 Mar 2017, accepted on 30 Apr 2017 and first published on 18 May 2017


Article type: Paper
DOI: 10.1039/C7DT00950J
Citation: Dalton Trans., 2017, Advance Article
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    Improved reactivity of a cyclic 13/15 compound by increased steric demand

    M. Balmer, M. Kapitein and C. von Hänisch, Dalton Trans., 2017, Advance Article , DOI: 10.1039/C7DT00950J

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