Oxindole synthesis by palladium-catalysed aromatic C–H alkenylation
作者:Satoshi Ueda、Takahiro Okada、Hideko Nagasawa
DOI:10.1039/b926560k
日期:——
A strategy involving palladium-catalysed aromatic C-H functionalisation/intramolecular alkenylation provides a convenient and direct synthesis of 3-alkylideneoxindoles. In the presence of 5 mol% of PdCl(2)MeCN(2) and AgOCOCF(3), a wide variety of N-cinnamoylanilines gave 3-alkylideneoxindoles in moderate to good yield.
Synthesis of (
<i>E</i>
)‐3‐Alkylideneindolin‐2‐ones by an Iron‐Catalyzed Aerobic Oxidative Condensation of Csp
<sup>3</sup>
–H Bonds of Oxindoles and Benzylamines
作者:Kovuru Gopalaiah、Ankit Tiwari
DOI:10.1002/ejoc.202001300
日期:2020.12.13
An iron‐catalyzed direct access to (E)‐3‐alkylideneindolin‐2‐ones through oxidative condensation of oxindoles with benzylamines is described. The procedure utilizes molecular oxygen as a clean and terminal oxidant.
The rhenium hetaphydride complex was found to be a versatile, homogeneous catalyst for dehydrogenative functionalization of alcohol. The dehydrogenative C-C coupling of alcohols and carbonyl compounds was carried out in the absence Of base and hydrogen acceptors to afford a series of alpha,beta-unsaturated carbonyl compounds. A possible dual activation pathway was proposed by mechanistic investigations.
Heterobimetallic Cobalt/Rhodium Nanoparticle-Catalyzed Carbonylative Cycloaddition of 2-Alkynylanilines to Oxindoles
作者:Ji Hoon Park、Eunha Kim、Young Keun Chung
DOI:10.1021/ol801978n
日期:2008.11.6
The cobalt-rhodium heterobimetallic nanoparticle-catalyzed synthesis of oxindoles from 2-alkynylanilines in the presence of carbon monoxide is described.
The Employment of Sodium Hydride as a Michael Donor in Palladium‐catalyzed Reductions of α, β‐Unsaturated Carbonyl Compounds
Sodium hydride was employed as a Michael donor under the catalysis of PdCl2 for 1,4‐conjugate reductions of α, β‐unsaturatedcarbonylcompounds, which features operational simplicity, mild conditions and high atom‐economy. The merits of NaH as a reductant were demonstrated by the one‐pot or cascade reactions for the syntheses of complex molecules.