Abstract
Ruthenium(II)-catalyzed switchable ortho C−H activation of 1-arylpyrazoles with maleimides has been achieved. This divergent reaction selectively installs various succinimide and maleimide substituents on the aromatic ring of 1-arylpyrazoles. Depending on the acidic or basic reaction conditions, a wide range of alkylation and alkenylation products are obtained, without the formation of bis-adducts. More information can be found in the Full Paper by Y. R. Lee and co-workers.
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