Intramolecular cyclization of ortho-alkynylanilines by Rh(I)-catalyzed hydroamination to yield benzo(dipyrroles)
摘要:
The methylene-bridged Rh(1) dicarbonyl complex, [Rh(bim)(CO)(2) BPh4 (1) (bim = bis(N-methylimidazol-2-yl)methane), is an effective catalyst for the intramolecular hydroamination of selected ortho-alkynylanilines to give a range of benzo(dipyrroles). (C) 2009 Elsevier Ltd. All rights reserved.
Palladium-Catalyzed Aerobic Oxidative Cyclization of <i>N</i>-Aryl Imines: Indole Synthesis from Anilines and Ketones
作者:Ye Wei、Indubhusan Deb、Naohiko Yoshikai
DOI:10.1021/ja3030824
日期:2012.6.6
We report here an operationally simple, palladium-catalyzed cyclization reaction of N-aryl imines, affording indoles via the oxidative linkage of two C-H bonds under mild conditions using molecular oxygen as the sole oxidant. The process allows quick and atom-economical assembly of indole rings from inexpensive and readily available anilines and ketones and tolerates a broad range of functional groups
[EN] PROCESSES FOR PREPARING INDOLES<br/>[FR] PROCÉDÉS DE PRÉPARATION D'INDOLES
申请人:UNIV NANYANG TECH
公开号:WO2013095304A1
公开(公告)日:2013-06-27
Methods for the synthesis of an indole in provided. Methods comprise oxidizing a N-aryl imine in the presence of a palladium-based catalyst, an oxidant, and a solvent.
提供了合成吲哚的方法。方法包括在钯基催化剂、氧化剂和溶剂的存在下氧化N-芳基亚胺。
Efficient Synthesis of Dipyrrolobenzenes and Dipyrrolopyrazines <i>via</i> Bidirectional Gold Catalysis: a Combined Synthetic and Photophysical Study
作者:Robin Heckershoff、Tobias Schnitzer、Tim Diederich、Lukas Eberle、Petra Krämer、Frank Rominger、Matthias Rudolph、A. Stephen K. Hashmi
DOI:10.1021/jacs.2c02394
日期:2022.5.11
New N-heterocyclic fluorophores are sought-after compounds for organic electronic devices. Here, we report on a straightforward synthesis to access meta/para-dipyrrolobenzenes and para-dipyrrolopyrazines in high yields using a bidirectional gold-catalyzed cyclization strategy. The versatility of our reaction protocol was showcased by preparing dipyrroloarenes with different substituents, various functional
Methods for the synthesis of an indole in provided. Methods comprise oxidizing a N-aryl imine in the presence of a palladium-based catalyst, an oxidant, and a solvent.
提供一种合成吲哚的方法。方法包括在钯基催化剂,氧化剂和溶剂的存在下氧化N-芳基亚胺。
Heterocyclic compound and organic light emitting device comprising the same
申请人:Hwang Seok-Hwan
公开号:US20090146555A1
公开(公告)日:2009-06-11
Provided is a heterocyclic compound represented by Formula I:
wherein Ar
1
is a linking group and a C6-C16 arylene or heteroarylene group; Ar
2
and Ar
3
are each independently a C6-C20 aryl group, a C4-C20 heteroaryl group or a C6-C20 fused polycyclic group; Ar
4
is a C6-C20 aryl group, a C6-C20 aryloxy group, a C4-C20 heteroaryl group or a C6-C20 fused polycyclic group; and Ar
1
and Ar
3
, or Ar
2
and Ar
3
may be connected to each other to form a ring. The heterocyclic compound has high electrical stability and excellent charge transporting capability, and thus can be efficiently used as a material for forming at least one of a hole injecting layer, a hole transporting layer and an emitting layer suitable for fluorescent and phosphorescent devices realizing all colors including red, green, blue and white.