已经开发了一种无金属的光催化策略,用于在廉价的NH 4 SCN中以氮化碳(gC 3 N 4)作为绿色溶剂中的普通多相催化剂,在空气气氛下和蓝色LED的照射下制备硫氰化杂环。各种硫氰酸盐杂环,包括吲哚[2,1- a ]异喹啉-6(5 H)-one,苯并咪唑并[2,1- a ]异喹啉-6(5 H)-one,硫代黄酮,氮杂螺[4.5]三烯酮和咪唑[ 1,2-一以高产率(高达96%)成功合成了]吡啶。重要的是,这种无金属和无外部氧化剂的方法使用碳酸二甲酯作为绿色介质,避免了传统的挥发性有机溶剂。此外,可循环使用的gC 3 N 4催化剂可使用至少8次,而不会显着降低活性。
Step and redox efficient nitroarene to indole synthesis
作者:Bünyamin Özkaya、Christina L. Bub、Frederic W. Patureau
DOI:10.1039/d0cc03258a
日期:——
priority in synthetic method development, in order to make synthetic processes more sustainable and more affordable. Herein, a step and redox efficient nitroarene to indolesynthesis is developed, in sharp contrast to the rich literature on the construction of indoles. Elemental zinc was found to be the best terminal reductant.
Manganese(<scp>iii</scp>)-promoted tandem phosphinoylation/cyclization of 2-arylindoles/2-arylbenzimidazoles with disubstituted phosphine oxides
作者:Shuai-Shuai Jiang、Yu-Ting Xiao、Yan-Chen Wu、Shu-Zheng Luo、Ren-Jie Song、Jin-Heng Li
DOI:10.1039/d0ob00877j
日期:——
1-a]isoquinolin-6(5H)-ones through manganese(III)-promoted tandem phosphinoylation/cyclization of 2-arylindoles or 2-arylbenzimidazoles with disubstituted phosphineoxides was developed. In this transformation, new C–P bond and C–C bond were constructed simultaneously under silver-free conditions, exhibiting a broad substrate scope. It was noted that not only diarylphosphine oxides but also dialkyl and arylalkyl-phosphine
一种简单实用的方法,通过锰合成磷酸取代的吲哚[2,1 - a ]异喹啉-6(5 H)-和苯并咪唑[2,1 - a ]异喹啉-6(5 H)-。III)促进了双芳基膦酸酯或2-芳基苯并咪唑与双取代氧化膦的串联膦酰基化/环化反应。在这种转变中,在无银条件下同时构建了新的C–P键和C–C键,具有广泛的底物范围。注意到不仅二芳基膦氧化物,而且二烷基和芳基烷基膦氧化物也符合条件。
새로운 헤테로고리 화합물 및 이를 이용한 유기 발광 소자
申请人:LG CHEM, LTD. 주식회사 엘지화학(120010134563) Corp. No ▼ 110111-2207995BRN ▼107-81-98139
公开号:KR101560028B1
公开(公告)日:2015-10-15
본 발명은 유기 발광 소자의 수명, 효율, 전기 화학적 안정성 및 열적 안정성을 크게 향상시킬 수 있는 신규 화합물, 및 상기 화합물이 유기화합물 층에 함유되어 있는 유기 발광 소자를 제공한다.
Regioselective Synthesis of Indoles
<i>via</i>
Rhodium‐Catalyzed CH Activation Directed by an
<i>In‐Situ</i>
Generated Redox‐Neutral Group
作者:Krishnamoorthy Muralirajan、Chien‐Hong Cheng
DOI:10.1002/adsc.201400224
日期:2014.5.5
A regioselective synthesis of indoles from arylhydrazine hydrochlorides with alkynes and diethyl ketone catalyzed by a rhodium complex is described. A possible mechanism involving an in‐situ generated oxidizing directing group NNCR1R2 assisted ortho‐CHactivation and reductive elimination are proposed. The catalytic reaction is highly compatible with a wide range of functional arylhydrazines and
Rhodium(III)-Catalyzed Redox-Neutral CH Annulation of Arylnitrones and Alkynes for the Synthesis of Indole Derivatives
作者:Zhi Zhou、Guixia Liu、Yan Chen、Xiyan Lu
DOI:10.1002/adsc.201500580
日期:2015.9.14
By using a nitrone as the oxidizingdirectinggroup, a mild, practical and efficient rhodium(III)‐catalyzed CH functionalization for the synthesis of indole derivatives has been developed. This reaction obviates the need for an external oxidant and shows good functional group tolerance. The employment of a sterically hindered Mes group on the carbon center of the nitrone is crucial to produce indoles