Synergistic Heterobimetallic Manifold for Expedient Manganese(I)-Catalyzed C−H Cyanation
作者:Weiping Liu、Sven C. Richter、Ruhuai Mei、Milica Feldt、Lutz Ackermann
DOI:10.1002/chem.201604621
日期:2016.12.12
The manganese‐catalyzed cyanation of inert C−H bonds was achieved within a heterobimetallic catalysis regime. The manganese(I) catalysis proved widely applicable and enabled C−H cyanations on indoles, pyrroles and thiophenes by facile C−Hmanganesation. The robustness of the manganese catalyst set the stage for the racemization‐free C−H cyanation of amino acids with excellent levels of positional and
A mild strategy for Co(III)-catalyzed C(sp2)–H cyanation of indoles was developed by using NCBLD as an electrophilic cyanation reagent and 1-butyl-3-acetylimidazole ditrifluoromethylsulfonimide ([BAIM]NTf2) as an environmentally friendly and recyclable solvent, and a series of 2-cyano products were obtained at room temperature. Adopting this strategy, the unnatural nucleotide fragment precursor of