Palladium-Catalyzed Allylation of Pronucleophiles with Alkynes at 50 °C – Remarkable Effect of 2-(Dicyclohexylphosphanyl)-2′-(dimethylamino)biphenyl as Ligand
Palladium-catalyzed allylic alkylation with internal alkynes to construct C–C and C–N bonds in water
作者:Shang Gao、Hao Liu、Zijun Wu、Hequan Yao、Aijun Lin
DOI:10.1039/c7gc00666g
日期:——
A palladium-catalyzed system enabled efficient allylicalkylation with alkynes in water has been developed. This reaction presents an environmental-friendly strategy for constructing lots of allylic compounds with indolinones, ketones, amines...
Allylicalcohols and allylic amines were directly utilized in a Pd-catalyzed hydrogen-bond-activated allylic amination under mild reaction conditions in the absence of any additives. The cooperative action of a Pd-catalyst and a hydrogen-bonding solvent is most likely responsible for its high reactivity. The catalytic system is compatible with a variety of functional groups and can be used to prepare
Rhodium-Catalyzed Enantioselective Hydroamination of Alkynes with Indolines
作者:Qing-An Chen、Zhiwei Chen、Vy M. Dong
DOI:10.1021/jacs.5b05200
日期:2015.7.8
alkynes via tandem rhodium catalysis gives branched N-allylic indolines with high regio- and enantioselectivity. An acid switch provides access to the linear isomer in preference to the branched isomer by an isomerization mechanism. Mechanistic studies suggest formation of an allene intermediate, which undergoes hydroamination to generate allylic amines instead of the enamine or imine products typically observed