Microwave-Assisted Simple and Efficient Ligand Free Copper Nanoparticle Catalyzed Aryl-Sulfur Bond Formation

2007 ◽  
Vol 349 (17-18) ◽  
pp. 2690-2696 ◽  
Author(s):  
Brindaban C. Ranu ◽  
Amit Saha ◽  
Ranjan Jana
Keyword(s):  
Bond Formation ◽  
Copper Nanoparticle ◽  
Microwave Assisted ◽  
Ligand Free ◽  
Sulfur Bond

Nano Copper Catalyzed Microwave Assisted Coupling of Benzene Boronic Acids with Thiophenols

2019 ◽  
Vol 16 (6) ◽  
pp. 491-494
Author(s):  
Dinesh S. Gavhane ◽  
Aniket P. Sarkate ◽  
Kshipra S. Karnik ◽  
Shritesh D. Jagtap ◽  
Sajed H. Ansari ◽  
...  
Keyword(s):  
Reaction Time ◽  
Microwave Irradiation ◽  
Bond Formation ◽  
Boronic Acids ◽  
Conventional Heating ◽  
Microwave Technique ◽  
Microwave Assisted ◽  
Measurable Amount ◽  
Ligand Free

A proficient, microwave mediated methodology using CuFe2O4 nanoparticle as the catalyst for S-arylation of substituted benzene boronic acids with thiophenol has been developed. In this method, the substituted thioethers were easily obtained through a C-S bond formation using microwave irradiation technique as well as conventional heating in the presence of CuFe2O4 nanoparticles with modest to excellent yields with the less reaction time. The ligand free microwave technique helped in the preparation of substituted thioethers in measurable amount within 10 mins. The same results were obtained with conventional heating in 12h. The reported method is economically efficient and an alternative to the initial existing method for the preparation of substituted thioethers.

A highly efficient carbon–sulfur bond formation reaction via microwave-assisted nucleophilic substitution of thiols to polychloroalkanes without a transition-metal catalyst

2006 ◽  
Vol 84 (11) ◽  
pp. 1529-1533 ◽  
Author(s):  
Yi-Ju Cao ◽  
Yuan-Yuan Lai ◽  
Hong Cao ◽  
Xiao-Ning Xing ◽  
Xiang Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Nucleophilic Substitution ◽  
Bond Formation ◽  
Transition Metal Catalysts ◽  
Metal Catalyst ◽  
Transition Metal Catalyst ◽  
Formation Reaction ◽  
Mild Conditions ◽  
Microwave Assisted ◽  
Sulfur Bond

An efficient carbon–sulfur bond formation reaction has been developed under microwave irradiation. This reaction affords a novel and rapid synthesis of thioacetals and sulfides under mild conditions. This method is particularly noteworthy given its experimental simplicity and high generality, and no transition-metal catalysts were needed under our conditions.Key words: microwave, sulfide, thiol, nucleophilic substitution.

scholarly journals Lewis acid / Base-free Strategy for the Synthesis of 2-Arylthio and Selenyl Benzothiazole / Thiazole and Imidazole

2021 ◽  
Vol 27 (1) ◽  
pp. 17-23
Author(s):  
Guniganti Balakishan ◽  
Gullapalli Kumaraswamy ◽  
Vykunthapu Narayanarao ◽  
Pagilla Shankaraiah
Keyword(s):  
Lewis Acid ◽  
Bond Formation ◽  
Acid Base ◽  
Mechanistic Pathway ◽  
Wide Range ◽  
Acid And Base ◽  
Lewis Acid And Base ◽  
Sulfur Bond

Abstract A Cu(II)-catalyzed Csp2-Se and Csp2-Sulfur bond formation was achieved with moderate to good yields without the aid of Lewis acid and base. The reaction is compatible with a wide range of heterocycles such as benzothiazole, thiazole, and imidazole. Also, this typical protocol is found to be active in thio-selenation via S-H activation. Additionally, we proposed a plausible mechanistic pathway involving Cu(III) putative intermediate.

ChemInform Abstract: Improved Microwave-Assisted Ligand-Free Suzuki-Miyaura Cross-Coupling of 5-Iodo-2′-deoxyuridine in Pure Water.

ChemInform ◽  
2013 ◽  
Vol 44 (48) ◽  
pp. no-no
Author(s):  
Shawn Gallagher-Duval ◽  
Gwenaelle Herve ◽  
Guillaume Sartori ◽  
Gerald Enderlin ◽  
Christophe Len
Keyword(s):  
Pure Water ◽  
Cross Coupling ◽  
Microwave Assisted ◽  
Ligand Free
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