Alcohol imination catalyzed by carbon nanostructures synthesized by C(sp²)-C(sp³) free radical coupling.

ABSTRACT: Imines are important intermediates for synthesizing various fine chemicals, with the disadvantage of requiring the use of expensive metal-containing catalysts. We report that the dehydrogenative cross-coupling of phenylmethanol and benzylamine (or aniline) directly forms the corresponding imine with a yield of up to 98%, and water as the sole by-product, in the presence of a stoichiometric base, using carbon nanostructures as the "green" metal-free carbon catalysts with high spin concentrations, which is synthesized by C(sp²)-C(sp³) free radical coupling reactions. The catalytic mechanism is attributed to the unpaired electrons of carbon catalysts to reduce O₂ to O₂^·-, which triggers the oxidative coupling reaction to form imines, wher

SUBMITTER: Wang C 

PROVIDER: S-EPMC10173739 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature