A simple and efficient copper-catalyzed amination of aryl halides by aqueous ammonia in water

2011 ◽  
Vol 89 (6) ◽  
pp. 645-649 ◽  
Author(s):  
Yefeng Zhu ◽  
Yunyang Wei
Keyword(s):  
Aromatic Amines ◽  
Aqueous Ammonia ◽  
Cross Coupling ◽  
Inert Atmosphere ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Primary Aromatic Amines ◽  
The Cross ◽  
Additional Base

The copper(I) iodide/1,4-bis(2-hydroxy-3,5-di-tert-butylbenzyl)piperazine (CuI–L2) system catalyzed the cross-coupling reactions between aryl halides and aqueous ammonia in water to produce primary aromatic amines in good yields. The protocol was simple and efficient, avoiding the need for inert atmosphere, additional base, or other additives.

scholarly journals Nano copper oxide catalyzed synthesis of symmetrical diaryl sulfides under ligand free conditions

2011 ◽  
Vol 7 ◽  
pp. 886-891 ◽  
Author(s):  
K Harsha Vardhan Reddy ◽  
V Prakash Reddy ◽  
A Ashwan Kumar ◽  
G Kranthi ◽  
YVD Nageswar
Keyword(s):  
Copper Oxide ◽  
Cross Coupling ◽  
Potassium Thiocyanate ◽  
Copper Oxide Nanoparticles ◽  
Aryl Halides ◽  
Oxide Nanoparticles ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Ligand Free ◽  
The Cross

Potassium thiocyanate acts as an efficient sulfur surrogate in C–S cross-coupling reactions mediated by recyclable copper oxide nanoparticles under ligand free conditions. This protocol avoids foul smelling thiols, for the synthesis of a variety of symmetrical diaryl sulfides, via the cross-coupling of different aryl halides with potassium thiocyanate, affording corresponding products in moderate to excellent yields.

Carbon-Heteroatom Cross-Coupling via an Electronically Excited Nickel (II) Complex

2019 ◽  
Author(s):  
Randolph Escobar ◽  
Jeffrey Johannes
Keyword(s):  
Energy Transfer ◽  
Functional Groups ◽  
Cross Coupling ◽  
Reductive Elimination ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
General Methodology ◽  
Cross Coupling Reactions ◽  
Electronically Excited ◽  
Energy Transfer Pathway

<div>While carbon-heteroatom cross coupling reactions have been extensively studied, many methods are specific and</div><div>limited to a set of substrates or functional groups. Reported here is a method that allows for C-O, C-N and C-S cross coupling reactions under one general methodology. We propose that an energy transfer pathway, in which an iridium photosensitizer produces an excited nickel (II) complex, is responsible for the key reductive elimination step that couples aryl halides to 1° and 2° alcohols, anilines, thiophenols, carbamates and sulfonamides.</div>

Water and Sodium Chloride: Essential Ingredients for Robust and Fast Pd‐Catalysed Cross‐Coupling Reactions between Organolithium Reagents and (Hetero)aryl Halides

2019 ◽  
Vol 131 (6) ◽  
pp. 1813-1816 ◽  
Author(s):  
Giuseppe Dilauro ◽  
Andrea Francesca Quivelli ◽  
Paola Vitale ◽  
Vito Capriati ◽  
Filippo Maria Perna
Keyword(s):  
Sodium Chloride ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Organolithium Reagents

Stereodivergent Hydrosilylation, Hydrostannylation, and Hydrogermylation of α-Trifluoromethylated Alkynes and Their Synthetic Applications

Synthesis ◽  
2016 ◽  
Vol 48 (19) ◽  
pp. 3317-3330 ◽  
Author(s):  
Cédric Tresse ◽  
Stéphane Schweizer ◽  
Philippe Bisseret ◽  
Jacques Lalevée ◽  
Gwilherm Evano ◽  
...  
Keyword(s):  
Functional Group ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Palladium Catalyzed

Stereoselective hydrometalation reactions of aryl- and alkyl-substituted trifluoromethylated alkynes with triethylsilane, tributylstannane, and triphenylgermane have been investigated. (E)-α-CF3-Vinylsilanes, -stannanes, and -germanes were obtained under palladium-catalyzed conditions whereas the corresponding (Z)-α-CF3-vinylgermanes were obtained under radical conditions. These reactions proceed in good to excellent yields and possess a broad functional group tolerance. Applications of the (Z)- and (E)-α-CF3-vinylgermanes in palladium-catalyzed cross-coupling reactions with aryl halides having diverse electronic requirements were also investigated. The corresponding (Z)- and (E)-α-CF3-styrenes were obtained as single isomers, thus demonstrating the utility of these versatile synthons for the synthesis of stereodefined trifluoromethylated alkenes.

A Nickel/Organoboron Catalyzed Metallaphotoredox Platform for C(sp2)–P and C(sp2)–S Bond Construction

2022 ◽  
Author(s):  
Yuan Zhu ◽  
Weisai Zu ◽  
Qing Tian ◽  
Zifeng Cao ◽  
Yu Wei ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Cross Coupling Reactions

Herein, an organoboron photocatalyst, aminoquinolate diarylboron (AQDAB), is utilized collaboratively with nickel catalyst in metallaphotoredox catalyzed C(sp2)–P and C(sp2)–S cross-coupling reactions. This strategy effectively couples aryl halides with diarylphosphine oxides...

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