384850-46-8

Upstream product

• 576-22-7 2-Bromo-m-xylene 
• 1066-54-2 trimethylsilylacetylene 
• 608-28-6 2,6-dimethyliodobenzene 

Downstream Products

• 1472016-65-1 C₂₇H₄₁AlSi₂ 
• 1377186-25-8 C₂₀H₂₀ 
• 503309-90-8 bis-1,5-(2,6-dimethylphenyl)-1,4-pentadiyn-3-ol 
• 503309-98-6 1,5-bis-(2,6-dimethylphenyl)-1,4-pentadiyn-3-one 
• 503309-99-7 2,6-bis(2,6-dimethylphenyl)thiapyran-4-one 
• 521305-62-4 2,6-dimethylphenylpropynal 
• 74331-74-1 2,6-dimethylphenylacetylene 
• 300392-01-2 [2,6-bis(bromomethyl)phenylethynyl]trimethylsilane 

Relevant academic research and scientific papers

ORGANIC ELECTROLUMINESCENCE ELEMENT AND MATERIAL

PROBLEM TO BE SOLVED: To provide a phosphorescent metal complex emitting blue light, which shows a low drive voltage, high emission efficiency, high color purity of emission and a long emission life when used for an element, and to provide an organic electroluminescence element containing the above metal complex. SOLUTION: The present invention provides a compound represented by general formula (I): ML1mL2n, and an organic electroluminescence element containing the above compound. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2020,JPOandINPIT

A guide to sonogashira cross-coupling reactions: The influence of substituents in aryl bromides, acetylenes, and phosphines

The conversion-time data for 168 different Pd/Cu-catalyzed Sonogashira cross-coupling reactions of five arylacetylenes (phenylacetylene; 1-ethynyl-2-ethylbenzene; 1-ethynyl-2,4,6-R3-benzene (R = Me, Et, i-Pr)) and Me3SiCCH with seven

General and selective head-to-head dimerization of terminal alkynes proceeding via hydropalladation pathway

A general highly regio- and stereoselective palladium-catalyzed head-to-head dimerization reaction of terminal acetylenes is presented. This methodology allows for the efficient synthesis of a variety of 1,4-enynes as single E stereoisomers. Computational studies reveal that this dimerization reaction proceeds via the hydropalladation pathway.

Arylethynyl derivatives of the dihydroazulene/vinylheptafulvene photo/thermoswitch: Tuning the switching event

A selection of dihydroazulene (DHA) photoswitches incorporating an arylethynyl-substituent in the seven-membered ring was prepared by palladium-catalyzed Sonogashira cross-coupling reactions employing a suitable bromo-functionalized DHA. Shielding of the

A comparison of linear optical properties and redox properties in chalcogenopyrylium dyes bearing ortho-substituted aryl substituents and tert-butyl substituents

A series of thiapyrylium pentamethine dyes (4 and 12-15) bearing 2,2′-di-tert-butyl-6,6′-diphenyl, 2,2′-di-tert-butyl-6,6′-bis(2,6-dimethylphenyl), 2,2′-di-tert-butyl-6,6′-bis(2-methylphenyl), 2,2′,6,6′-tetrakis(2,6-dimethylphenyl), and 2,2′,6,6′-tetrakis(2-methylphenyl) substituents, respectively, were prepared and their linear optical properties and electrochemical redox properties were measured and compared to thiapyrylium pentamethine dyes 3 and 5. The tert-butyl and 2,6-dimethylphenyl substituents give nearly identical chromophores with respect to values of λmax, molar extinction coefficients (ε), bandwidths at half-height (ν1/2), and lack of absorption in the visible spectrum. The 2-methylphenyl substituent imparts linear optical properties that are intermediate between those of the tert-butyl and phenyl substituents. The 2,6-dimethylphenyl and 2-methylphenyl substituents impart greater oxidative stability based on anodic shifts in oxidation potential.

Structural elucidation of 1,3-phenylenebis(methylene)-bridged calix[6]arenes with four uncapped hydroxy groups

1,3-Phenylenebis(methylene)-bridged calix[6]arenes with four uncapped hydroxy groups at the lower rim and various kinds of functionalities on the bridging unit were synthesized. Their structures in solution and in the crystalline state were determined by NMR spectroscopy, molecular mechanics calculations, and X-ray crystallographic analyses. They were found to adopt a pinched cone conformation, where the bridging 1,3-phenylenebis(methylene) unit lies below in such a way that it forms the bottom of the cone. There is a strong intramolecular hydrogen bonding network forming a cyclic array in these molecules; this network is considered to play an important role in the stabilization of the pinched cone conformation. The conformational mobility of the bridging unit was also investigated. It was found that the steric demand of the central functionality has a great influence on the swinging motion of the bridging unit.