Single Electron Transfer to Diazomethane–Borane Adducts Prompts C−H Bond Activations

While (Ph(2)CN(2))B(C(6)F(5))(3) is unstable, single electron transfer from Cp*(2)Co affords the isolation of stable products [Cp*(2)Co][Ph(2)CNNHB(C(6)F(5))(3)] 1 and [Cp*Co(C(5)Me(4)CH(2)B(C(6)F(5))(3))] 2. The analogous combination of Ph(2)CN(2) and BPh(3) showed no evidence of adduct formation a...

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Detalles Bibliográficos
Autores principales: Cao, Levy L., Zhou, Jiliang, Qu, Zheng‐Wang, Stephan, Douglas W.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2019
Materias:
Communications
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6972512/
https://www.ncbi.nlm.nih.gov/pubmed/31589360
http://dx.doi.org/10.1002/anie.201912338
Descripción
Sumario:While (Ph(2)CN(2))B(C(6)F(5))(3) is unstable, single electron transfer from Cp*(2)Co affords the isolation of stable products [Cp*(2)Co][Ph(2)CNNHB(C(6)F(5))(3)] 1 and [Cp*Co(C(5)Me(4)CH(2)B(C(6)F(5))(3))] 2. The analogous combination of Ph(2)CN(2) and BPh(3) showed no evidence of adduct formation and yet single electron transfer from Cp*(2)Cr affords the species [Cp*(2)Cr][PhC(C(6)H(4))NNBPh(3)] 3 and [Cp*(2)Cr][Ph(2)CNNHBPh(3)] 4. Computations showed both reactions proceed via transient radical anions of the diphenyldiazomethane–borane adducts to effect C−H bond activations.

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