Recyclable imidazolium ion-tagged nickel catalyst for microwave-assisted C–S cross-coupling in water using sulfonyl hydrazide as the sulfur source

2018 ◽  
Vol 42 (15) ◽  
pp. 12796-12801 ◽  
Author(s):  
Vaishali Saini ◽  
Bharti Khungar
Keyword(s):  
Microwave Irradiation ◽  
Nickel Catalyst ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Sulfur Source ◽  
Mild Conditions ◽  
Microwave Assisted ◽  
Imidazolium Ion

Recyclable nickel(ii) catalyst promoted sulfenylation of aryl halides with sulfonyl hydrazides in water using microwave irradiation under mild conditions is reported.

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...

scholarly journals Nickel-catalyzed C–N bond activation: activated primary amines as alkylating reagents in reductive cross-coupling

2019 ◽  
Vol 10 (16) ◽  
pp. 4430-4435 ◽  
Author(s):  
Huifeng Yue ◽  
Chen Zhu ◽  
Li Shen ◽  
Qiuyang Geng ◽  
Katharina J. Hock ◽  
...  
Keyword(s):  
Nickel Catalyst ◽  
Bond Activation ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Primary Amines ◽  
Pyridinium Salts ◽  
Reaction Conditions ◽  
Alkyl Amines ◽  
Alkylating Reagents

The reductive cross coupling of pyridinium salts derived from readily available primary alkyl amines with aryl halides has been achieved under mild reaction conditions using a nickel catalyst.

Microwave-assisted Carbon-carbon and Carbon-heteroatom Cross-coupling Reactions in Organic Synthesis

2020 ◽  
Vol 7 (2) ◽  
pp. 86-98
Author(s):  
Rammyani Pal ◽  
Chhanda Mukhopadhyay
Keyword(s):  
Microwave Irradiation ◽  
Organic Synthesis ◽  
Cross Coupling ◽  
Side Reactions ◽  
Coupling Reactions ◽  
Considerable Effort ◽  
Microwave Assisted ◽  
External Heat Source ◽  
Cross Coupling Reactions ◽  
Metal Catalyzed

Conventionally, the organic reactions are accomplished by conductive heating with an external heat source like an oil bath. On the contrary, since its inception, the application of microwave irradiation is growing as a suitable alternate heating method in organic synthesis. Microwave heating considerably reduces the reaction time without promoting any side reactions. The fundamental synthetic organic chemistry majorly deals with transition-metal-catalyzed C–C and C–heteroatom bond formation reactions. It is one of the most important methods in contemporary chemistry resulting in a tremendous increment in the applications of these reactions during the last few years. This field has been acknowledged with a number of Nobel Prizes during the last decade (2001, 2005 and 2010). A considerable effort has been done on the continuous development of new ligands and catalysts as well as an increased understanding of the mechanisms for the improvement of the reaction condition. This review focuses on some of the latest developments in the area of cross-coupling reactions aided by microwave irradiation.

One-pot Synthesis of Dibenzofurans via SNAr and Subsequent Ligand-free Palladium-catalyzed Intramolecular Aryl-aryl Cross-coupling Reactions under Microwave Irradiation

2011 ◽  
Vol 66 (8) ◽  
pp. 833-836
Author(s):  
Zhiping Che ◽  
Hui Xu
Keyword(s):  
Microwave Irradiation ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
One Pot ◽  
One Pot Synthesis ◽  
Cross Coupling Reactions ◽  
Ligand Free ◽  
Palladium Catalyzed ◽  
Snar Reaction

An efficient one-pot synthesis of dibenzofurans, via SNAr reaction of aryl halides and ortho-bromophenols in the presence of anhydrous K2CO3 and subsequent ligand-free palladium-catalyzed intramolecular aryl-aryl cross-coupling cyclization under microwave irradiation, is described.

Aqueous Sonogashira coupling of aryl halides with 1-alkynes under mild conditions: use of surfactants in cross-coupling reactions

RSC Advances ◽  
2015 ◽  
Vol 5 (24) ◽  
pp. 18960-18971 ◽  
Author(s):  
Gina M. Roberts ◽  
Wenya Lu ◽  
L. Keith Woo
Keyword(s):  
Aqueous Solutions ◽  
Organic Solvents ◽  
Cross Coupling ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Aryl Bromide ◽  
Sonogashira Coupling ◽  
Mild Conditions ◽  
Cross Coupling Reactions

Aqueous solutions of common and inexpensive surfactants (e.g. SDS and CTAB) are surveyed as an alternative to organic solvents in Sonogashira cross-coupling. Aryl-bromide substrates are best coupled under Cu-free conditions.

Novel Class of Tertiary Phosphine Ligands Based on a Phospha-adamantane Framework and Use in the Suzuki Cross-Coupling Reactions of Aryl Halides under Mild Conditions

2003 ◽  
Vol 5 (6) ◽  
pp. 953-955 ◽  
Author(s):  
George Adjabeng ◽  
Tim Brenstrum ◽  
Jeffrey Wilson ◽  
Christopher Frampton ◽  
Al Robertson ◽  
...  
Keyword(s):  
Cross Coupling ◽  
Phosphine Ligands ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
Tertiary Phosphine ◽  
Mild Conditions ◽  
Cross Coupling Reactions
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