Nickel-Catalyzed Reductive Cross-Coupling of Vinyl Bromides with Unactivated Alkyl Halides
作者:Qun Qian、Kunhua Lin、Hegui Gong、Jun Gu、Canbin Qiu、Wenbin Lu
DOI:10.1055/s-0036-1588132
日期:——
ligand for the reductive vinylation of unactivated secondary alkyl halides under Ni-catalyzed conditions has been developed. Both alkyl- and aryl-substituted vinyl bromides are suitable, in which alkyl-decorated α-alkenyl bromides resulted in the α-products in good results. The use of pyridine as the sole ligand for the reductive vinylation of unactivated secondary alkyl halides under Ni-catalyzed conditions
Alkyl–aryl ketone synthesis via nickel-catalyzed reductive coupling of alkyl halides with aryl acids and anhydrides
作者:Xiao Jia、Xinghua Zhang、Qun Qian、Hegui Gong
DOI:10.1039/c5cc03113c
日期:——
The present work disclosed a much improved method for the construction of alkyl‒arylketones by direct coupling of unactivated alkyl bromides with 1.5 equiv of acids. In addition, the synthesis...
Nickel-catalyzed cross-electrophile coupling of aryl bromides and cyclic secondary alkyl bromides with spiro-bidentate-pyox ligands
作者:Nanxing Gao、Yanshun Li、Guorui Cao、Dawei Teng
DOI:10.1039/d1nj02677a
日期:——
coupling of aryl bromides and cyclic secondary alkylbromides catalyzed by nickel/spiro-bidentate-pyox ligands with lithium chloride as the additive for the Csp2–Csp3 bond formation was reported. The reaction could tolerate functional groups such as sulfonamide, ester, aldehyde, ketone, protected indolyl, tert-butoxycarbonyl, aryl nitriles and aryl chloride. Various aryl-cyclic secondary alkyl Csp2–Csp3 bond
A site-selective bromination of C(sp3)−H bonds in unprotected aliphatic amines has been developed, achieved by tuning of the electronics properties of the proximal C−H bonds via substrate protonation. Consecutive intramolecular cyclization of alkyl bromide offered a series of N-containing heterocycles characterized by high ring strains. Moreover, the resulting C(sp3)−Br serves as a synthetic linchpin