Palladium(0)-catalyzed rearrangement of N-allyl enamines. Synthesis of .delta.,.epsilon.-unsaturated imines and .gamma.,.delta.-unsaturated carbonyl compounds
Palladium(0)-catalyzed rearrangement of N-allyl enamines. Synthesis of .delta.,.epsilon.-unsaturated imines and .gamma.,.delta.-unsaturated carbonyl compounds
Ni-Catalyzed Regioselective β,δ-Diarylation of Unactivated Olefins in Ketimines via Ligand-Enabled Contraction of Transient Nickellacycles: Rapid Access to Remotely Diarylated Ketones
作者:Prakash Basnet、Roshan K. Dhungana、Surendra Thapa、Bijay Shrestha、Shekhar KC、Jeremiah M. Sears、Ramesh Giri
DOI:10.1021/jacs.8b03163
日期:2018.6.27
zed regioselective β,δ-diarylation of unactivated olefins in ketimines with arylhalides and arylzinc reagents. This diarylation proceeds at remote locations to the carbonyl group to afford, after simple H+ workup, diversely substituted β,δ-diarylketones that are otherwise difficult to access readily with existing methods. Deuterium-labeling and crossover experiments indicate that diarylation proceeds
Ni-catalyzed migratory β-selective hydroarylation and hydroalkenylation of alkenyl ketones and alkenyl azahetereoarenes have been realized with aryl boronicacids using alkyl halide as the mild hydride source. This reaction features mild conditions, broad substrate scope and incredible heterocycle compatibility, providing a variety of β-aryl or -alkenyl ketones or heteroarenes in moderate to high yields