Metal-free direct cyanoisopropylation/arylation of N-arylacrylamides or N-alkyl-N-(arylsulfonyl)acrylamides with AIBN: a simple and mild approach to cyano-containing oxindoles
A general, highly efficient approach to cyano-containing oxindoles is presented that is achieved by a metal-free direct cyanoisopropylation/arylation ofN-arylacrylamides orN-alkyl-N-(arylsulfonyl)acrylamides with AIBN.
Metal-Free Meerwein Carboarylation of Alkenes with Anilines: A Straightforward Approach to 3-Benzyl-3-alkyloxindoles
作者:Shi Tang、Dong Zhou、Ying-Chun Wang
DOI:10.1002/ejoc.201402010
日期:2014.6
A metal-free, straightforwardcarboarylation reaction of alkenes with anilines was developed that proceeds through a radical C–H cyclization. In the presence of benzoyl peroxide (5 mol-%), tert-butyl nitrite, and an array of anilines, a wide variety of N-arylacrylamides underwent a tandem Meerwein arylation/C–H cyclization to construct the pharmaceutically important 3-benzyl-3-alkyloxindole scaffold
DYE COMPOUND, COMPOSITION COMPRISING DYE COMPOUND, AND DISPLAY DEVICE USING DYE COMPOUND
申请人:Samsung Display Co. Ltd.
公开号:US20180355179A1
公开(公告)日:2018-12-13
Provided are a dye compound, a composition comprising the dye compound, and a display device using the dye compound. The dye compound is represented by Formula 1.
Transition-Metal-Free Synthesis of Carbonyl-Containing Oxindoles from <i>N</i>-Arylacrylamides and α-Diketones via TBHP- or Oxone-Mediated Oxidative Cleavage of C(sp<sup>2</sup>)–C(sp<sup>2</sup>) Bonds
Carbonyl-containing oxindoles can be prepared from N-arylacrylamides and alpha-diketones by TBHP- or oxone (KHSO5)-mediated C(sp(2))-C(sp(2)) bond cleavage and new C(sp(2))-C(sp(3)) bond formation. This methodology is characterized by its simple and transition-metal-free conditions and good functional group compatibility utilizing inexpensive and readily available reagents, thus providing a practical and efficient approach to an important class of 3-(2-oxoethyl)indolin-2-ones which are highly valued synthetic intermediates of biologically active molecules. In this transformation, alkylcarbonyl-containing oxindoles were obtained in majority when N-arylacrylamides reacted with asymmetric aliphatic/aromatic alpha-diketones. On the basis of the preliminary experiments, a plausible mechanism of this transformation is disclosed.