855749-05-2

Upstream product

• 98-59-9 p-toluenesulfonyl chloride 
• 449173-31-3 4-amino-3-(2-phenylethynyl)pyridine 
• 536-74-3 phenylacetylene 
• 13534-98-0 3-bromopyridin-4-amine 

Relevant academic research and scientific papers

Coupling and cycloaddition of ynamides: Homo- and Negishi coupling of tosylynamides and intramolecular [4 + 2] cycloaddition of N-(o-ethynyl)phenyl ynamides and arylynamides

N,N′-aryl- and N,N′-alkyl-buta-1,3-diyne-1,4-ditosylamides have been synthesized for the first time, in good to excellent yields, by copper-catalyzed dimerization of the corresponding N-aryl or N-alkyl tosylynamides. Negishi coupling of N-ethynylzinc tosy