金(I)催化的邻-(N-束缚的1,6-6-二炔基)苯甲醛的分子内[4 + 2]环加成反应成3,4-二氢苯并[ f ]异喹啉-1(2H)-
摘要:
一种有效的合成方法,通过金(I)催化的邻-(N-拴系的1,6-二炔基)苯甲醛的分子内[4 + 2]苯环化制备3,4-二氢苯并[ f ]异喹啉-1(2H)-酮。描述了在2mol%的低催化剂载量下的催化剂。3,4-二氢苯并[ f ]异喹啉-1(2H)-one的产物可以通过在温和的条件下简单地用苯基溴化镁处理而轻易地转化为苯并[ f ]异喹啉-1-醇。化合物2o和2w的结构也通过X射线晶体学分析确定。
Construction of Spirofused Tricyclic Frameworks by NHC-Catalyzed Intramolecular Stetter Reaction of a Benzaldehyde Tether with a Cyclic Enone
作者:Day-Shin Hsu、Chiao-Yun Cheng
DOI:10.1021/acs.joc.9b01403
日期:2019.9.6
hydrogenation. These substrates were then exposed to an N-heterocyclic carbene, whereupon intramolecular Stetterreaction proceeded smoothly to give various spirofused tricyclic 1,4-diketones in 30–87% yields. Furaldehyde and nicotinaldehyde derivatives also participated in the reaction under the Stetter conditions.
Carbene Bridging C-H Activation: Facile Isocoumarin Synthesis Through Palladium-Catalyzed Reaction of 2-Pseudohalobenzaldehydes with Aryl Diazoesters
作者:Chao Yan、Yinghua Yu、Bo Peng、Xueliang Huang
DOI:10.1002/ejoc.201901738
日期:2020.2.14
A strategy based on carbene bridging C–H activation is described. The bridging arm is generated via migratory insertion of a palladium carbene intermediate. Through this distinct pathway, a variety of isocoumarins could be prepared in a modular manner.
Direct and selective synthesis of 3-arylphthalides via nickel-catalyzed aryl addition/intramolecular esterification
作者:Qing Qiang、Feipeng Liu、Zi-Qiang Rong
DOI:10.1016/j.tet.2021.132162
日期:2021.6
Herein we report a nickel-catalyzed aryl addition/intramolecular esterification in a cascade fashion. Under the combination of commercially available nickel precursor and tridentate ligand, the one pot protocol offers a direct, simple and regioselective approach to access 3-aryl phthalide derivatives from two readily available substrates with good efficiency, broad scope as well as satisfactory functional
Compounds with a pyridoisoquinolinone core often appear as members of the protoberberine alkaloid family. Traditional methods to construct this framework normally rely on manipulation of sophisticated reactants. Herein, a palladium-catalyzed reaction of readily available pyridotriazoles and o-bromo/pseudohalo benzaldehydes is described, which provides a modular approach to pyridoisoquinolinone derivatives
CONDENSED CYCLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
申请人:SAMSUNG DISPLAY CO., LTD.
公开号:US20160204353A1
公开(公告)日:2016-07-14
An organic light-emitting device includes a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer and a condensed cyclic compound of Formula 1. The emission layer includes a host and a dopant, and the condensed cyclic compound acts as the dopant.