Synthesis of aromatic terminal allenes and aliphatic terminal alkynes from hydrazones using calcium carbide as an acetylene source

2020 ◽  
Vol 7 (4) ◽  
pp. 702-708 ◽  
Author(s):  
Lei Gao ◽  
Zheng Li
Keyword(s):  
Calcium Carbide ◽  
Selective Synthesis ◽  
Terminal Alkynes ◽  
Simple Method

A simple method for the selective synthesis of aromatic terminal allenes and aliphatic terminal alkynes from the reactions of calcium carbide with ketone and aldehyde p-tosylhydrazones using copper as a mediator is described.

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...

Selective synthesis of (Z)-2-enynyl-2-hydroxy-imidazolidine-4,5-diones via Cu(i)-mediated multicomponent coupling of terminal alkynes, carbodiimides and oxalyl chloride

2014 ◽  
Vol 12 (21) ◽  
pp. 3336-3339 ◽  
Author(s):  
Fei Zhao ◽  
Yuexing Li ◽  
Yang Wang ◽  
Wen-Xiong Zhang ◽  
Zhenfeng Xi
Keyword(s):  
Oxalyl Chloride ◽  
Selective Synthesis ◽  
Terminal Alkynes ◽  
Geminal Coupling ◽  
Multicomponent Coupling

(Z)-2-Enynyl-2-hydroxy-imidazolidine-4,5-diones are synthesized via Cu(i)-mediated (Z)-selective geminal coupling among two terminal alkynes, carbodiimides, and oxalyl chloride. Further transformation is explored.

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.

Zirconium-Mediated Cross-Coupling of Terminal Alkynes and Vinyl Bromides: Selective Synthesis of Cyclobutene and 1,3-Diene Derivatives

2004 ◽  
Vol 10 (1) ◽  
pp. 101-108 ◽  
Author(s):  
José Barluenga ◽  
Félix Rodríguez ◽  
Lucía Álvarez-Rodrigo ◽  
Francisco J. Fañanás
Keyword(s):  
Cross Coupling ◽  
Selective Synthesis ◽  
Terminal Alkynes

ChemInform Abstract: Hydrothiolation of Terminal Alkynes with Diaryl Disulfides and Diphenyl Diselenide: Selective Synthesis of (Z)-1-Alkenyl Sulfides and Selenides.

ChemInform ◽  
2009 ◽  
Vol 40 (12) ◽  
Author(s):  
Zhang-Lin Wang ◽  
Ri-Yuan Tang ◽  
Pei-Song Luo ◽  
Chen-Liang Deng ◽  
Ping Zhong ◽  
...  
Keyword(s):  
Selective Synthesis ◽  
Diphenyl Diselenide ◽  
Terminal Alkynes

Water-Dependent Selective Synthesis of Mono- or Bis-Selanyl Alkenes from Terminal Alkynes

2016 ◽  
Vol 1 (14) ◽  
pp. 4289-4294 ◽  
Author(s):  
Eduardo Q. Luz ◽  
Eric F. Lopes ◽  
Vanessa G. Ricordi ◽  
Claudio Santi ◽  
Thiago Barcellos ◽  
...  
Keyword(s):  
Selective Synthesis ◽  
Terminal Alkynes

ChemInform Abstract: Efficient and Selective Synthesis of E-Vinylamines via Tungsten(0)-Catalyzed Hydroamination of Terminal Alkynes.

ChemInform ◽  
2015 ◽  
Vol 46 (16) ◽  
pp. no-no
Author(s):  
Paulina Kociecka ◽  
Izabela Czelusniak ◽  
Teresa Szymanska-Buzar
Keyword(s):  
Selective Synthesis ◽  
Terminal Alkynes
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