An FeCl2-promoted carbomethylation of arylacrylamides by di-tert-butyl peroxide (DTBP) is achieved, leading to 3-ethyl-3-substituted indolin-2-one in high yield. The reaction tolerates a series of functional groups, such as cyano, nitro, ethyloxy carbonyl, bromo, chloro, and trifluoromethyl groups. The radical methylation and arylation of the alkenyl group are involved in this reaction.
Palladium-Catalyzed Oxidative Arylalkylation of Activated Alkenes: Dual CH Bond Cleavage of an Arene and Acetonitrile
作者:Tao Wu、Xin Mu、Guosheng Liu
DOI:10.1002/anie.201104575
日期:2011.12.23
but two: The title reaction proceeds through the dual CHbondcleavage of both aniline and acetonitrile (see scheme). The reaction affords a variety of cyano‐bearing indolinones in excellent yield. Mechanistic studies demonstrate that this reaction involves a fast arylation of the olefin and a rate‐determining CH activation of the acetonitrile.
Hydrazonyl Radical-Participated Tandem Reaction: A Strategy for the Synthesis of Pyrazoline-Functionalized Oxindoles
作者:Xiao-Yong Duan、Xiu-Long Yang、Pan-Pan Jia、Man Zhang、Bing Han
DOI:10.1021/acs.orglett.5b03003
日期:2015.12.18
efficient and practical tandem cyclization/addition/cyclization strategy is developed for the initial generated hydrazonylradicals derived from the oxidation of β,γ-unsaturatedhydrazones. By using this protocol, structurally novel pyrazoline-functionalized oxindoles are prepared by the reaction of easily accessible β,γ-unsaturatedhydrazones with N-aryl acrylamides under the metal- and solvent-free conditions
The present invention concerns a compound of formula (I)
or a salt, suitably a pharmaceutically acceptable salt, or solvate thereof, wherein the groups R
1
, R
2
, Ar′, A and Y are defined in the description, to compositions and use of the compounds in the treatment of inflammatory and allergic conditions.
作者:Ya-Min Li、Xiao-Hong Wei、Xi-An Li、Shang-Dong Yang
DOI:10.1039/c3cc47287f
日期:——
A novel metal-free oxidative carbonitration of alkenes by a nitration and C–H functionalization cascade process has been developed. This methodology provides an efficient way to construct valuable nitro-containing oxindoles.