38170-79-5

Upstream product

• 38170-80-8 1,3-di(trimethylsilylethynyl)benzene 
• 1066-54-2 trimethylsilylacetylene 
• 1448755-51-8 C₁₃H₁₄Br₂Si 
• 77123-55-8 3-((trimethylsilyl)ethynyl)benzaldehyde 
• 3132-99-8 m-bromobenzoic aldehyde 

Downstream Products

• 388613-53-4 3,5-bis-(3-trimethylsilanylethynyl-phenylethynyl)-benzoic acid ethyl ester 
• 388613-50-1 C₅₂H₄₂O₄Si₂ 
• 388613-56-7 C₇₁H₅₄O₆Si₂ 
• 1351165-69-9 1-ethynyl-3-(4-methoxyphenylethynyl)benzene 
• 1151549-82-4 4-[2-[3-[2-(4-methoxyphenyl)ethynyl]phenyl]ethynyl]benzonitrile 
• 1443989-82-9 C₆₄H₇₈P₄Pt₂ 
• 1443989-81-8 C₇₀H₉₄P₄Pt₂Si₂ 
• 388613-55-6 C₄₅H₂₈Br₂O₆ 
• 388613-54-5 3,5-bis-(3-ethynyl-phenylethynyl)-benzoic acid ethyl ester 

Relevant academic research and scientific papers

First Dewar benzene approach to acetylenic oligophenylene macrocycles: Synthesis and structure of a molecular rectangle bearing two spindles

A novel Dewar benzene approach to the construction of oligophenylene macrocycles has been developed by introducing Dewar benzene 1 as a building block and applied to the synthesis of a molecular rectangle 8, whose structure was characterized crystallograp

One-pot transformation of Me3Si-/Ph2P(O)-protected ethynes to unsymmetrical arylethynes

Me3Si-/Ph2P(O)-protected ethynes were successfully transformed to unsymmetrical arylethynes via a one-pot Ph2P(O)-deprotection/ [Pd(dppf)Cl2]-catalysed coupling and one-pot Me3Si-deprotection/Sonogash

Synthesis and characterization of redox-active mononuclear Fe(κ2-dppe)(η5-C5Me 5)-Terminated π-conjugated wires

Several new redox-active Fe(κ2-dppe)(η5- C5Me5) arylacetylide complexes featuring pendant ethynyl (Fe(κ2-dppe)(η5-C5Me 5)[{Ci -C(1,4-C6H4)}n

Syntheses of Acetylenic Oligophenylene Macrocycles Based on a Novel Dewar Benzene Building Block Approach

A general synthetic approach to strained p-phenylene-based acetylenic macrocycles is described. A key feature in this approach is exploitation of Dewar benzene as an angular p-phenylene synthon. Thus, 1,4-acetal-bridged 2,5-dichloro(Dewar benzene) 5, prepared in four steps from dimethyl acetylenedicarboxylate and 1,2-dichloroethylene, is applied as such a building block in the syntheses of strained macrocycles 13 and anti-20. For the synthesis of 13, m-phenylene units are used as spacers and modified Eglington-Glaser coupling is applied for the macrocyclization step. For the synthesis of anti-20, on the other hand, o-phenylene units are used as spacers and Sonogashira coupling is applied for the macrocyclization step. Macrocycles 13 and anti-20 are characterized crystallographically, and their strained nature is reflected mainly in the deviation of the acetylene units from linearity; the C≡C-C angles range from 168.7(3)° to 179.9(3)° in 13 and from 168.0(5)° to 171.4(4)° in anti-20. Macrocycle 13 shows unique conformational property, namely, the p-phenylene units arranged in parallel in the rectangular framework rotate freely about the long axes, as evidenced by the 1H NMR studies. Macrocycle anti-20 exhibits a Stokes shift of 179 nm, which is exceptionally large for phenylacetylene macrocycles, presumably owing to the characteristic stacking structure.

Oligosaccharide Analogues of Polysaccharides. Part 3. A New Protecting Group for Alkynes: Orthogonally Protected Dialkynes

Dialkynes of the type 3 (Scheme 1) are regioselectively deprotected by treating them either with base in a protic solvent (-> 4), or - after exposing the OH group - by catalytic amounts of base in an aprotic solvent (-> 5 and 8).The Me3Si-protected 12 (Sc