5865-77-0

Upstream product

• 615-37-2 ortho-methylphenyl iodide 
• 18887-51-9 2,2'-Bis-acetoxymethyl-diphenylacetylen 
• 18887-49-5 2-[2-(2-hydroxymethylphenyl)-1-ethynyl]phenylmethanol 
• 5294-03-1 di-o-tolylethyne 

Downstream Products

• 10018-24-3 2,2'-Bis--diphenylenacetylen-dibromid 
• 89561-12-6 2,2'-Tolanbis(methylamin)-N,N,N',N'-tetraessigsaeure-tetramethylester 
• 207673-31-2 Bis{2-[4-(trimethylsilyl)but-3-yn-1-yl]phenyl}acetylene 
• 207673-28-7 Bis(2-{[(but-2-yn-1-yl)oxy]methyl}phenyl)acetylene 
• 207673-32-3 2,2'-Di(but-2-yn-1-yl)-2,2'-{ethynediylbis[(2,1-phenylene)methylene]}dimalonate 
• 207673-27-6 Bis(2-{[(prop-2-yn-1-yl)oxy]methyl}phenyl)acetylene 
• 89593-26-0 2,2'-Tolanbis(methylamin)-N,N,N',N'-tetraessigsaeure 
• 1639883-24-1 3,3'-(2,2'-(ethyne-1,2-diyl)bis(2,1-phenylene))dipropanenitrile 
• 1639883-27-4 3,3'-(ethyne-1,2-diyldibenzene-2,1-diyl)bis(2,2-dimethylpropanenitrile) 
• 18887-49-5 2-[2-(2-hydroxymethylphenyl)-1-ethynyl]phenylmethanol 
• 19064-90-5 2-(2-hydroxymethylphenethyl)phenylmethanol 
• 19132-49-1 2,2'-bis-hydroxymethyl-trans-stilbene 
• 19132-47-9 2,2'-Bis--cis-stilben 
• 223596-84-7 Bis[2-(but-3-yn-1-yl)phenyl]acetylene 

Relevant academic research and scientific papers

A straightforward double intramolecular cyclization of dibenzyl dichalcogenols into a triple bond

The intramolecular cyclizations of four types of dibenzyl chalcogenols, which contained one or two ethynyl groups, were carried out. Either the double 5-exo or 6-endo-dig mode ring closure reaction regio- and stereoselectively proceeded to give the corres

Synthesis of aromatic triynes as precursors to helicene derivatives

A general and versatile synthetic approach to a broad series of aromatic triynes as precursors to helicene derivatives has been developed. Employing a set of simple tools, triynes comprising the (phenylethynyl)benzene, 1-(phenylethynyl)naphthalene, and 1-(1-naphthylethynyl)-naphthalene moiety have been prepared in good to excellent yields throughout the whole reaction sequence. The methodology allows constructing various types of a junction between the central diarylacetylene moiety and the attached acetylene units to get the target triynes of general formula R-C≡C-CH2-X-CH2-Ar-C≡C-Ar-CH 2-X-CH2-C≡C-R or R-C≡C-CH2CH2-Ar-C=C-Ar-CH2CH 2-C≡C-R (R = H, CH3, TMS, or TIPS; X = O, NTs, or C(CO2CH3)2; Ar/Ar = 2-phenylene or 2-naphthylene).