Palladium-catalyzed site-selective arylation of aliphatic ketones enabled by a transient ligand
作者:Lei Pan、Ke Yang、Guigen Li、Haibo Ge
DOI:10.1039/c8cc00980e
日期:——
Transition metal-catalyzed direct C–H bond functionalization enabled by transient ligands has become an attractive topic. Here we report a palladium-catalyzed site-selective arylation of β-C(sp3)–H bonds in aliphatic ketones with β-alanine as the transient ligand.
Rhenium complex-catalyzed coupling reaction of enol acetates with alcohols
作者:Rui Umeda、Yuuki Takahashi、Yutaka Nishiyama
DOI:10.1016/j.tetlet.2014.09.054
日期:2014.10
The reaction of enolacetates with alcohols in the presence of a catalytic amount of a rhenium complex, such as ReBr(CO)5, produced the corresponding ketones and aldehydes in moderate to good yields. It was suggested that the preparation of an ether, an intermolecular dehydrated product, was the first step of the reaction.
When benzylic and allylic alcohols were treated with enolacetate in the presence of a catalytic amount of a rhenium complex, ReBr(CO)5, the carbon-carbon bond formation of the alcohols and enolacetate smoothly proceeded to give the corresponding ketones and aldehyde in moderate to good yields. For the reaction of allylic alcohols, γ,δ-unsaturated carbonylcompounds were obtained in good yields. When
α-Alkylation of Carbonyl Compounds by Direct Addition of Alcohols to Enol Acetates
作者:Yoshihiro Nishimoto、Yoshiharu Onishi、Makoto Yasuda、Akio Baba
DOI:10.1002/anie.200904069
日期:2009.11.16
A practical α‐alkylation of ketones and aldehydes has been achieved by the directaddition of alcohols to enolacetates. The moderate Lewis acidity of InI3, GaBr3, and FeBr3 is a key factor in the catalytic cycle, and many different alcohols and enolacetates have been successfully used in this procedure.
Palladium(II)-catalyzed hydroarylation of α,β-unsaturated aldehydes and ketones with triarylstibines in the presence of silver acetate
作者:Chan Sik Cho、Koichiro Tanabe、Sakae Uemura
DOI:10.1016/0040-4039(94)88042-5
日期:1994.2
Triarylstibines react with α,β-unsaturated aldehydes and ketones in acetic acid at 25°C in the presence of silveracetate and a catalytic amount of palladium(II) acetate to afford the hydroarylation products by conjugate addition in good yields.