Copper-Catalyzed Preparation of 2-Aryl-3-cyanobenzofurans with Bright Blue Photoluminescence
摘要:
Copper-catalyzed cascade synthesis of 2-aryl-3-cyanobefizaurans from o-hydroxybenzaldehydes and arylacetonitriles in the presence of copper acetate and sodium methoxide is reported. The synthesized 2-aryl-3-cyanobenzofurans emit bright blue under IN light with a quantum yield up to 88.9%.
Copper-Mediated Cyclization−Halogenation and Cyclization−Cyanation Reactions of β-Hydroxyalkynes and <i>o</i>-Alkynylphenols and Anilines
作者:Nalivela Kumara Swamy、Arife Yazici、Stephen G. Pyne
DOI:10.1021/jo1005119
日期:2010.5.21
The CuX (X = I, Br, Cl, CN)-mediated cyclization−halogenation and cyclization−cyanation reactions of β-hydroxyalkynes and o-alkynylphenol and -aniline derivatives give rise to 3-halo- and 3-cyanofuro[3,2-b]pyrroles, 3-iodo-, 3-bromo-, and 3-cyanobenzofurans, and 3-cyanoindoles, respectively.
CuX(X = I,Br,Cl,CN)介导的β-羟基炔烃与邻炔基苯酚和-苯胺衍生物的环化-卤化和环化-氰化反应生成3-卤代和3-氰基呋喃[3,2 - b ]吡咯,3-碘,3-溴-和3- cyanobenzofurans和3- cyanoindoles,分别。
Cu(II)‐Mediated C−C/C−O Bond Formation via C−H/C−C Bond Cleavage: Access to Benzofurans Using Amide as a Traceless Directing Group
A copper‐mediated synthesis of 2,3‐disubstituted benzofurans with the assistance of an 8‐aminoquinolyl auxiliary is described from readily available benzamides and benzoylacetonitriles. In this reaction, the C−C bond is successfully constructed viaC−H activation, and C−O bond is subsequently formed at the original position of the amide group in a one‐pot manner. The amide directinggroup is detached
Copper-Catalyzed Cascade Synthesis of 2-Aryl-3-cyanobenzofuran and Dibenzo[<i>b</i>,<i>f</i>]oxepine-10-carbonitrile Derivatives
作者:Bharath Kumar Villuri、Sachin S. Ichake、Sabbasani Rajasekhara Reddy、Veerababurao Kavala、Vijayalakshmi Bandi、Chun-Wei Kuo、Ching-Fa Yao
DOI:10.1021/acs.joc.8b01443
日期:2018.9.7
The copper-catalyzed reaction of aryl aldehydes with 2-iodobenzylcyanides afforded 2-aryl-3-cyanobenzofurans in isolated yields of up to 74% in a cascade manner, which involves Knoevenagel condensation, aryl hydroxylation, oxa-Michael addition, and aromatization reactions. Conversely, 2-halo benzaldehydes as reacting partners with 2-iodobenzylcyanide regioselectively furnished dibenzo[b,f]oxepine-10-carbonitrile
Copper-Catalyzed Preparation of 2-Aryl-3-cyanobenzofurans with Bright Blue Photoluminescence
作者:Lianpeng Zhang、Zhixing Peng、Qiaodong Wen、Xihui Li、Ping Lu、Yanguang Wang
DOI:10.1021/acs.orglett.5b03704
日期:2016.2.19
Copper-catalyzed cascade synthesis of 2-aryl-3-cyanobefizaurans from o-hydroxybenzaldehydes and arylacetonitriles in the presence of copper acetate and sodium methoxide is reported. The synthesized 2-aryl-3-cyanobenzofurans emit bright blue under IN light with a quantum yield up to 88.9%.