3043-33-2

Usage

Uses

Used in Chemical Industry:
2-methylpenta-2,3-diene is used as a raw material for the production of various chemicals and pharmaceuticals due to its versatile chemical properties.
Used in Rubber Industry:
2-methylpenta-2,3-diene is used as a monomer in the manufacturing of synthetic rubber and other polymers, such as butyl rubber and styrene-butadiene rubber, due to its ability to polymerize and form long-chain molecules.
Used in Environmental Applications:
2-methylpenta-2,3-diene is used as a precursor to the formation of ozone and secondary organic aerosols in the atmosphere, making it a significant contributor to air quality concerns. Efforts are made to control its emissions and reduce its impact on air pollution and smog formation.

Upstream product

• 21960-71-4 1,1-dibromo-2,2,3-trimethylcyclopropane 
• 54305-88-3 2,3-dibromo-2-methylpentane 
• 63468-05-3 2-methyl-pent-3-en-2-ol 
• 203251-07-4 3-bromo-2-methyl-pent-2-ene 
• 999-79-1 4-chloro-4-methylpent-2-yne 
• 108-24-7 acetic anhydride 
• 75-07-0 acetaldehyde 
• 917-54-4 methyllithium 
• 6214-32-0 1-bromo-3-methylbuta-1,2-diene 
• 3664-56-0 1,3,3-trimethylcyclopropene 
• 13994-33-7 4-methyl-1,2,3-pentatriene 
• 109-99-9 tetrahydrofuran 
• 123-91-1 1,4-dioxane 
• 2270-59-9 1-bromo-4-methylpent-3-ene 

Downstream Products

• 28457-08-1 2,4-dibromo-2-methylpentane 
• 861538-11-6 1,2-diisopropylidene-3,4-dimethyl-cyclobutane 
• 64037-70-3 2-ethyl-3-methyl-butyric acid amide 
• 30830-46-7 1.1.4-Trimethyl-spiro<2.2>pentan 
• 30626-45-0 Dichloro-1,1-ethyliden-3-dimethyl-2,2-cyclopropan 
• 30626-39-2 Dichloro-1,1-ethyliden-3-dimethyl-2,2-cyclopropan 
• 5239-76-9 Dibromo-1,1-ethyliden-3-dimethyl-2,2-cyclopropan 
• 5239-75-8 Dibromo-1,1-ethyliden-3-dimethyl-2,2-cyclopropan 
• 13994-32-6 1,1-dibromo-2,2-dimethyl-3-ethylidenecyclopropane 
• 39486-76-5 2-methyl-pent-1-en-3-one oxime 
• 52741-33-0 (Z)-3-iodo-2-methyl-penta-1,3-diene 
• 68930-36-9 2,2-bis-(chloro-difluoro-methyl)-4,6-dimethyl-3,6-dihydro-2H-pyran 
• 68930-37-0 (E)-1-chloro-2-(chloro-difluoro-methyl)-1,1-difluoro-3-isopropenyl-pent-3-en-2-ol 
• 68930-31-4 3-Isopropylidene-4-methyl-cyclobut-1-ene-1,2-dicarboxylic acid dimethyl ester 

Relevant academic research and scientific papers

Polylithiumorganic compounds - 23. 1: 3,4-dilithio-1,2-butadienes by addition of lithium metal to 1,4-unsymmetrically substituted butatrienes

The synthesis of the highly reactive 1,4-unsymmetrically substituted butatrienes 12a-c is described. When employing a strict synthetic protocol, these alkatrienes react with lithium metal to 3,4-dilithio-1,2-butadienes 20a-c as stable intermediates. The structure of 20 is supported by IR and NMR spectroscopic evidence. The same dianionic intermediate can be prepared in one case by double deprotonation of the 1,2-butadiene 19. Upon derivatization, either 3,4-disubstituted 1,2-butadienes 24, 2,3-disubstituted 1,3-butadienes 25, or 1,4-disubstituted 2-butynes 26 are formed, depending on the nature of the electrophile employed. Copyright

Aryl and heteroaryl (phosphinylmethyl)phosphonate squalene synthetase inhibitors and method

Phosphonic acid squalene synthetase inhibitors are provided which are effective in lowering serum cholesterol and have the formula STR1 wherein m is 0 to 3, n is 1 to 5, Y1 and Y2 are H or halogen, R2, R3 and R4 are H, metal ion, C1 to C8 alkyl, C3 to C12 alkenyl, or prodrug ester, and R1 is a substituted or unsubstituted heteroaryl group or a substituted phenyl group.

The far-ultraviolet photochemistry of alkylcyclopropenes in solution

The photochemistry of 1,3,3-trimethylcyclopropene and 1-tert-butyl-3,3-dimethylcyclopropene has been investigated in hydrocarbon, methanol, and 1-hexene solution with far-ultraviolet (185-228 nm) light.Direct photolysis of the two compounds affords allene, alkyne, and 1,3-diene derivatives, formally as a result of initial bond cleavage to yield vinylcarbene intermediates.Products derived from cleavage of the most substituted (C1-C3) cyclopropene bond account for 60-80percent of the observed mixture in each case.Results from the photolysis of 1,3,3-trimethylcyclopropene-1-13C suggest a second pathway for formation of alkyne products in cyclopropene photochemistry, which occurs in competition with (or by exclusion of) the vinylcarbene -hydrogen migration pathway.The data are consistent with the intermediacy of a vinylidene species, formed by -hydrogen migration/ring opening, although attempts to chemically trap this intermediate with methanol or alkene were unsuccessful.Key words: cyclopropene, photolysis, vinylmethylene, propenylidene, far-UV.