74331-70-7

Usage

Uses

Used in Pharmaceutical Industry:
2-Ethynyl-1,4-dimethylbenzene is used as a building block in organic synthesis for the production of pharmaceuticals. Its unique structure and reactivity make it a valuable component in the development of new drugs and medicinal compounds.
Used in Dye Industry:
In the dye industry, 2-Ethynyl-1,4-dimethylbenzene is utilized as a precursor for the synthesis of various dyes. Its chemical properties allow for the creation of a wide range of colors and hues, making it an essential component in the production of dyes for textiles, plastics, and other materials.
Used in Fine Chemicals Production:
2-Ethynyl-1,4-dimethylbenzene is also employed in the production of other fine chemicals. Its versatility and reactivity contribute to the synthesis of specialty chemicals used in various applications, such as fragrances, flavorings, and other chemical intermediates.
Used in Polymer and Resin Manufacturing:
As a precursor in the manufacture of polymers and resins, 2-Ethynyl-1,4-dimethylbenzene plays a crucial role in the development of new materials with specific properties. Its incorporation into polymer and resin formulations can enhance their performance characteristics, such as strength, durability, and resistance to environmental factors.

InChI:InChI=1/C10H10/c1-4-10-7-8(2)5-6-9(10)3/h1,5-7H,2-3H3

Upstream product

• 2142-73-6 1-(2,5-dimethylphenyl)-1-ethanone 
• 74331-90-1 2,5-Dimethyl-α-chlorstyrene 
• 77403-89-5 (E)-β-(2,5-dimethylphenyl)vinyl bromide 
• 1122-42-5 2-iodo-p-xylene 
• 4301-14-8 acetylenemagnesium bromide 
• 553-94-6 4-bromo-m-xylene 
• 2039-89-6 2,5-dimethylstyrene 
• 6972-51-6 2-(2,5-dimethylphenyl)ethan-1-ol 

Downstream Products

• 74331-82-1 (E)-1,2-Dibromo-1-(2,5-dimethylphenyl)ethylene 
• 74331-83-2 (Z)-1,2-Dibromo-1-(2,5-dimethylphenyl)ethylene 
• 74331-89-8 (E)-1-Acetoxy-2-bromo-1-(2,5-dimethylphenyll)ethylene 
• 74331-89-8 (Z)-1-Acetoxy-2-bromo-1-(2,5-dimethylphenyl)ethylene 
• 77385-73-0 α-(2,5-dimethylphenyl)vinyl bromide 
• 1058710-37-4 C₁₄H₁₂N₂ 
• 1335059-32-9 C₃₆H₃₀ 
• 1335059-36-3 C₁₆H₁₂I₂ 
• 1335059-34-1 C₂₆H₂₁I 
• 1359619-04-7 1-[(Z)-2-(2,5-dimethylphenyl)ethenyl]-1H-pyrrole 
• 1379762-43-2 C₅₆H₇₀O₂ 
• 1379762-42-1 1-bromo-4-(2,5-dimethylphenylethynyl)-2,5-didodecyloxybenzene 
• 1378287-93-4 3-((2,5-dimethylphenyl)ethynyl)-1-isopropyl-1H-pyrazolo[3,4-d]pyrimidin-4-amine 
• 1383428-44-1 (E)-2-(2,5-dimethylstyryl)cyclohexanone 

Relevant academic research and scientific papers

SO2F2-Mediated Oxidative Dehydrogenation and Dehydration of Alcohols to Alkynes

Direct synthesis of alkynes from inexpensive, abundant alcohols was achieved in high yields (greater than 40 examples, up to 95% yield) through a SO2F2-promoted dehydration and dehydrogenation process. This straightforward transformation of sp3-sp3 (C-C) bonds to sp-sp (C=C) bonds requires only inexpensive and readily available reagents (no transition metals) under mild conditions. The crude alkynes are sufficiently free of impurities to permit direct use in further transformations, as illustrated by regioselective Huisgen alkyne-azide cycloaddition reactions with PhN3 to give 1,4-substituted 1,2,3-traiazoles (16 examples, up to 92% yield) and Sonogashira couplings (10 examples, up to 77% yield).

SYNTHESIS AND POLYMERIZATION OF 2,5-DISUBSTITUTED PHENYLACETYLENES CONTAINING TRIFLUOROMETHYL GROUPS

Four phenylacetylenes (2-R2-5-R5-C6H3CCH : 1a R2=R5=CF3; 1b R2=CF3, R5=CH3; 1c R2=CH3, R5=CF3; 1d R2=R5=CH3) were synthesized via lithio compounds or Grignard reagent.Bromo(methyl)benzotrifluorides, the precursors for the lithio compounds, were prepared by the fluorination of the corresponding benzoic acids with sulfur tetrafluoride.Polymerization using transition metal catalysts provided polyacetylenes in high yields for all the monomers, while the yields of γ-ray induced polymerization depended on the monomers.The molecular weights of polyacetylenes have a positive correlation with the yields for all the polymerizations.The substituent effects on the molecular weights and tehrmal stabilities of polymers obtained were discussed.

Dissociative ionization of aryl-substituted vinyl bromides in the gas phase: Experimental and computational evidence for the formation of stable α-arylvinyl cations both by direct means and spontaneous exothermic isomerization of unstable isomeric ions

The kinetic energy release T which accompanies the Br· loss from ionized (E)- and (Z)-β-bromostyrenes (5 and 6) in the gas phase is higher by 0.7 ± 0.03 kcal mol-1 than that from the molecular ion of α-bromostyrene (4). Together with both colli

Vinyl Cation Intermediates in Solvolytic and Electrophilic Reactions. 2. Bromination of Arylacetylenes

The kinetics of bromination of a series of ten ring-substituted phenylacetylenes were investigated in anhydrous acetic acid at 25 deg C.All substrates were substituted with one or two methyl groups at the ortho position(s) for comparison with the behavior