Matches in SemOpenAlex for { <https://semopenalex.org/work/W2889365789> ?p ?o ?g. }
- W2889365789 endingPage "12068" @default.
- W2889365789 startingPage "12056" @default.
- W2889365789 abstract "Cobalt/nickel-dual catalyzed hydroarylation of terminal olefins with iodoarenes builds complexity from readily available starting materials, with a high preference for the Markovnikov (branched) product. Here, we advance a mechanistic model of this reaction through the use of reaction progress kinetic analysis (RPKA), radical clock experiments, and stoichiometric studies. Through exclusion of competing hypotheses, we conclude that the reaction proceeds through an unprecedented alkylcobalt to nickel direct transmetalation. Demonstration of catalytic alkene prefunctionalization, via spectroscopic observation of an organocobalt species, distinguishes this Csp2–Csp3 cross-coupling method from a conventional transmetalation process, which employs a stoichiometric organometallic nucleophile, and from a bimetallic oxidative addition of an organohalide across nickel, described by radical scission and subsequent alkyl radical capture at a second nickel center. A refined understanding of the reaction leads to an optimized hydroarylation procedure that excludes exogenous oxidant, demonstrating that the transmetalation is net redox neutral. Catalytic alkene prefunctionalization by cobalt and engagement with nickel catalytic cycles through direct transmetalation provides a new platform to merge these two rich areas of chemistry in preparatively useful ways." @default.
- W2889365789 created "2018-09-07" @default.
- W2889365789 creator A5029590201 @default.
- W2889365789 creator A5060411508 @default.
- W2889365789 creator A5063620849 @default.
- W2889365789 date "2018-08-28" @default.
- W2889365789 modified "2023-10-17" @default.
- W2889365789 title "Mechanistic Interrogation of Co/Ni-Dual Catalyzed Hydroarylation" @default.
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