A copper(I)-catalyzed ring-opening cyanation of cyclopropanols was developed. The reaction provides an alternative method to achieve β-cyano ketones efficiently. This reaction exhibits good functional group compatibility under mild conditions and can be scaled up to the gram scale. Preliminary mechanistic studies suggest that the reaction might go through a free radical process.
A radical decarboxylative C(sp3)–C(sp3) cross-coupling of NHPI esters and cyclopropanols was developed by combining photocatalysis and copper catalysis, which presents the efficient access to β-benzyl ketones in excellent yields. Terpyridin-4′-one used as the ligand is vital for the reaction, which could facilitate the capture of benzylic radicals by alkyl-copper species generated from copper-catalyzed
Palladium-catalyzed coupling of amides and cyclopropanols for the synthesis of γ-diketones
作者:Lili Fang、Shuqi Jia、Shuaixin Fan、Jin Zhu
DOI:10.1039/d3cc02888g
日期:——
method has been developed for the coupling of amides and cyclopropanols to γ-diketones, through simultaneous C–N and C–C activation. Heteroatom ligand exchange and heteroatom-to-carbon ligation mode switching enable the achievement of molecular cross-coupling in an amide N-atom structural context-dependent manner, avoiding any stoichiometric organometallic reagent or base.