4 years ago

Thorium Metallacycle Facilitates Catalytic Alkyne Hydrophosphination

Thorium Metallacycle Facilitates Catalytic Alkyne Hydrophosphination
John Arnold, Stephan Hohloch, Bernard F. Parker, Robert G. Bergman, Mary E. Garner
The bis(NHC)borate-supported thorium-bis(mesitylphosphido) complex (1) undergoes reversible intramolecular C–H bond activation enabling the catalytic hydrophosphination of unactivated internal alkynes. Catalytic and stoichiometric experiments support a mechanism involving reactive Th–NHC metallacycle intermediates (Int and 2).

Publisher URL: http://dx.doi.org/10.1021/jacs.7b08323

DOI: 10.1021/jacs.7b08323

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