1289154-68-2

Upstream product

• 529-28-2 4-iodoanisol 
• 120651-33-4 ((2‐ethynylphenyl)ethynyl)trimethylsilane 
• 40230-91-9 [(2-methoxyphenyl)ethynyl]trimethylsilane 
• 6630-33-7 ortho-bromobenzaldehyde 
• 1066-54-2 trimethylsilylacetylene 
• 1404452-67-0 ((2‐(2,2‐dibromovinyl)phenyl)ethynyl)trimethylsilane 
• 77123-58-1 2-[2-(trimethylsilyl)ethynyl]benzaldehyde 
• 767-91-9 1-ethynyl-2-methoxybenzene 
• 137648-47-6 1-iodo-2-ethynylbenzene 

Downstream Products

• 1289154-70-6 1-ethynyl-2-[(2-methoxyphenyl)ethynyl]benzene 
• 1289154-72-8 α-[[2-[(2-methoxyphenyl)ethynyl]phenyl]ethynyl]-α-(1,1-dimethylethyl)benzenemethanol 
• 1289154-74-0 C₂₈H₂₆O 

Relevant academic research and scientific papers

Triflic acid mediated cascade cyclization of aryldiynes for the synthesis of indeno[1,2-c]chromenes: Application to dye-sensitized solar cells

A new triflic acid (TfOH)-mediated cascade cyclization of ortho-anisole-substituted aryldiynes is described for the construction of indeno[1,2-c]chromenes. The cascade cyclization proceeds through an unusual TfOH-induced alkyne-alkyne cyclization followed by nucleophilic attack of the methoxy group on the benzylidene cation, which is completely different to the cyclization of ortho-aniline- or ortho-thioanisole-substituted aryldiynes. A new class of organic dyes with the indeno[1,2-c]chromene framework as both donor and π-linker were synthesized. These compounds exhibit high photovoltaic performances in dyesensitized solar cells (DSCs).

CO extrusion in homogeneous gold catalysis: Reactivity of gold acyl species generated through water addition to gold vinylidenes

Herein, we describe a new gold-catalyzed decarbonylative indene synthesis. Synergistic σ,π-activation of diyne substrates leads to gold vinylidene intermediates, which upon addition of water are transformed into gold acyl species, a type of organogold compound hitherto only scarcely reported. The latter are shown to undergo extrusion of CO, an elementary step completely unknown for homogeneous gold catalysis. By tuning the electronic and steric properties of the starting diyne systems, this new reactivity could be exploited for the synthesis of indene derivatives in high yields.

Synthesis of 5-(2-methoxy-1-naphthyl)- and 5-[2- (methoxymethyl)-1- naphthyl]-11H-benzo[b]fluorene as 2,2'-disubstituted 1,1'-binaphthyls via benzannulated enyne-allenes

5-(2-Methoxy-1-naphthyl)- and 5-[2-(methoxymethyl)-1-naphthyl]-11H-benzo[b] fluorene were synthesized by treatment of the corresponding benzannulated enediynes with potassium tert-butoxide in refluxing toluene to give benzannulated enyne-allenes for the subsequent Schmittel cascade cyclization reactions. The structures of these two 5-(1-naphthyl)-11H-benzo[b]fluorenes could be regarded as 2,2′-disubstituted 1,1′-binaphthyls with the newly constructed benzofluorenyl group serving as a naphthyl moiety.