The ruthenium-catalysed selective synthesis of mono-deuterated terminal alkynes

2016 ◽  
Vol 52 (24) ◽  
pp. 4509-4512 ◽  
Author(s):  
Basujit Chatterjee ◽  
Chidambaram Gunanathan
Keyword(s):  
Catalytic System ◽  
Deuterium Oxide ◽  
Selective Synthesis ◽  
Terminal Alkynes ◽  
Selective Activation ◽  
Highly Efficient ◽  
Chemoselective Synthesis ◽  
Reaction Proceeds

A highly efficient catalytic system is reported for chemoselective synthesis of mono-deuterated terminal alkynes using deuterium oxide in which the reaction proceeds via Ru–acetylide intermediates formed by selective activation of the sp-CH bond.

Highly Efficient Pd/Tetraphosphine Catalytic System for Copper-Free Sonogashira Reactions of Aryl Bromides with Terminal Alkynes

2012 ◽  
Vol 142 (5) ◽  
pp. 594-600 ◽  
Author(s):  
Tao Yi ◽  
Min Mo ◽  
Hai-Yan Fu ◽  
Rui-Xiang Li ◽  
Hua Chen ◽  
...  
Keyword(s):  
Catalytic System ◽  
Terminal Alkynes ◽  
Highly Efficient ◽  
Aryl Bromides ◽  
Sonogashira Reactions

KF/Al2O3as a Highly Efficient, Green, Heterogeneous, and Reusable Catalytic System for the Solvent-Free Synthesis of Carboacyclic Nucleosides via Michael Addition Reaction

2008 ◽  
Vol 39 (1) ◽  
pp. 139-157 ◽  
Author(s):  
Abdolkarim Zare ◽  
Alireza Hasaninejad ◽  
Mohammad Hassan Beyzavi ◽  
Ahmad Reza Moosavi Zare ◽  
Ali Khalafi-Nezhad ◽  
...  
Keyword(s):  
Catalytic System ◽  
Michael Addition ◽  
Addition Reaction ◽  
Solvent Free ◽  
Michael Addition Reaction ◽  
Highly Efficient ◽  
Solvent Free Synthesis

scholarly journals Bis-NHC–Ag/Pd(OAc)2 Catalytic System Catalyzed Transfer Hydrogenation Reaction

Catalysts ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 8
Author(s):  
Hui-Ju Chen ◽  
Chien-Cheng Chiu ◽  
Tsui Wang ◽  
Dong-Sheng Lee ◽  
Ta-Jung Lu
Keyword(s):  
Functional Groups ◽  
Catalytic System ◽  
High Efficiency ◽  
Aqueous Media ◽  
Hydrogenation Reaction ◽  
Transfer Hydrogenation ◽  
Terminal Alkynes ◽  
Wide Range ◽  
Transfer Hydrogenation Reaction

The bis-NHC–Ag/Pd(OAc)2 catalytic system (NHC = N-heterocyclic carbene), a combination of bis-NHC–Ag complex and Pd(OAc)2, was found to be a smart catalyst in the Pd-catalyzed transfer hydrogenation of various functionalized arenes and internal/terminal alkynes. The catalytic system demonstrated high efficiency for the reduction of a wide range of various functional groups such as carbonyls, alkynes, olefins, and nitro groups in good to excellent yields and high chemoselectivity for the reduction of functional groups. In addition, the protocol was successfully exploited to stereoselectivity for the transformation of alkynes to alkenes in aqueous media under air. This methodology successfully provided an alternative useful protocol for reducing various functional groups and a simple operational protocol for transfer hydrogenation.

Cycloaddition of N-sulfonyl and N-sulfamoyl azides with alkynes in aqueous media for the selective synthesis of 1,2,3-triazoles

2021 ◽  
Author(s):  
Thumpati Prasanth ◽  
Gargi Chakraborti ◽  
Tirtha Mandal ◽  
Velayutham Ravichandiran ◽  
Jyotirmayee Dash
Keyword(s):  
Aqueous Media ◽  
Selective Synthesis ◽  
Terminal Alkynes ◽  
Amide Derivatives

The cycloaddition of N-sulfonyl and N-sulfamoyl azides with terminal alkynes generally produces amide derivatives via ketenimine intermediates. We herein delineate a Cu(I) catalyzed method using a prolinamide ligand that selectively...

scholarly journals C–C (alkynylation) vs C–O (ether) bond formation under Pd/C–Cu catalysis: synthesis and pharmacological evaluation of 4-alkynylthieno[2,3-d]pyrimidines

2011 ◽  
Vol 7 ◽  
pp. 338-345 ◽  
Author(s):  
Dhilli Rao Gorja ◽  
K Shiva Kumar ◽  
K Mukkanti ◽  
Manojit Pal
Keyword(s):  
Cytotoxic Activity ◽  
Catalytic System ◽  
High Selectivity ◽  
Bond Formation ◽  
Terminal Alkynes ◽  
Ether Bond ◽  
Pharmacological Evaluation

The Pd/C–CuI–PPh3 catalytic system facilitated C–C bond formation between 4-chlorothieno[2,3-d]pyrimidines and terminal alkynes in methanol with high selectivity without generating any significant side products arising from C–O bond formation between the chloro compounds and methanol. A variety of novel 4-alkynylthieno[2,3- d]pyrimidines were prepared via alkynylation of 4-chlorothieno[2,3-d]pyrimidines in good to excellent yields. Some of the compounds synthesized were tested for cytotoxic activity in vitro.

A highly efficient copper and ligand free protocol for the room temperature Sonogashira reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (1) ◽  
pp. 16-19 ◽  
Author(s):  
Ankur Gogoi ◽  
Anindita Dewan ◽  
Utpal Bora
Keyword(s):  
Catalytic System ◽  
Room Temperature ◽  
Sonogashira Reaction ◽  
Highly Efficient ◽  
Aryl Iodides ◽  
Ligand Free

A mild and efficient catalytic system based on PdCl2 and Na2SO4 has been developed for the Sonogashira reaction of aryl iodides at room temperature.

ChemInform Abstract: N-Arylation of Indoles with Aryl Halides Using Copper/Glycerol as a Mild and Highly Efficient Recyclable Catalytic System.

ChemInform ◽  
2014 ◽  
Vol 45 (27) ◽  
pp. no-no
Author(s):  
Dilip Kumar T. Yadav ◽  
Sanil S. Rajak ◽  
Bhalchandra M. Bhanage
Keyword(s):  
Catalytic System ◽  
Aryl Halides ◽  
Highly Efficient

Selective Synthesis of 1-O-Alkyl(poly)glycerol Ethers by Catalytic Reductive Alkylation of Carboxylic Acids with a Recyclable Catalytic System

ChemSusChem ◽  
2012 ◽  
Vol 5 (12) ◽  
pp. 2397-2409 ◽  
Author(s):  
Marc Sutter ◽  
Wissam Dayoub ◽  
Estelle Métay ◽  
Yann Raoul ◽  
Marc Lemaire
Keyword(s):  
Carboxylic Acids ◽  
Catalytic System ◽  
Selective Synthesis ◽  
Reductive Alkylation ◽  
Glycerol Ethers
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