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Your search keyword '"Sobolev, Alexandre N."' showing total 9 results
Start Over Author "Sobolev, Alexandre N." Journal organometallics
9 results on '"Sobolev, Alexandre N."'

8. The Synthesis and Catalytic Activity of New Mixed NHC-Phosphite Nickel(0) Complexes

Author

Duczynski, Jeremy, Sobolev, Alexandre N., Moggach, Stephen A., Dorta, Reto, and Stewart, Scott G.

Abstract

Herein we describe the synthesis and isolation of the first low-valent NHC-phosphite nickel complexes of general formula Ni(NHC)[P(OAr)3]2. These three-coordinate Ni(0) compounds were fully characterized, including by X-ray crystallography that highlighted their trigonal planar geometry. The representative complex Ni(IMes)[P(OPh)3]2was used to show that a phosphite ligand is readily substituted in the presence of an aldehyde or nitrile. These stoichiometric studies then led to an investigation of their catalytic properties in the Suzuki–Miyaura cross-coupling reactions between aryl tosylates and aryl boronic acids, a first for such a NHC-Ni catalyst. Finally, mechanistic investigations led to the isolation of a well-defined oxidative addition product.

Published
2020
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