762-63-0

Basic information

• Product Name: CIS-1.1.1-TRIMETHYL-2-BUTENE
• Synonyms: (Z)-4,4-dimethylpent-2-ene;2-PENTENE,4,4-DIMETHYL-,(Z)-;Nsc74142;(2Z)-4,4-Dimethyl-2-pentene;(Z)-(CH3)3CCH=CHCH3;(Z)-4,4-Dimethyl-2-pentene;4,4-Dimethyl-cis-2-pentene;cis-1-tert-butyl-2-methylethylene
• CAS NO: 762-63-0
• Molecular Formula: C₇H₁₄
• Molecular Weight: 98.18606
• EINECS: 212-102-4
• Mol File: 762-63-0.mol
• Article Data: 6

Chemical Properties

• Melting Point: -135.46°C
• Boiling Point: 79.85°C
• Appearance: /
• Density: 0.6951
• Refractive Index: 1.3999
• CAS DataBase Reference: CIS-1.1.1-TRIMETHYL-2-BUTENE(CAS DataBase Reference)
• NIST Chemistry Reference: CIS-1.1.1-TRIMETHYL-2-BUTENE(762-63-0)
• EPA Substance Registry System: CIS-1.1.1-TRIMETHYL-2-BUTENE(762-63-0)

Safety Data

• Hazardous Substances Data: 762-63-0(Hazardous Substances Data)

Usage

General Description

CIS-1.1.1-TRIMETHYL-2-BUTENE, also known as 2-methyl-2-butene, is a colorless liquid with a pungent odor commonly used as a chemical intermediate in the production of polymers, resins, and other industrial products. It is highly flammable and should be stored and handled with caution. CIS-1.1.1-TRIMETHYL-2-BUTENE is primarily used as a solvent and as a component in the manufacture of synthetic rubber and plasticizers. It is also utilized in the production of insecticides and other agricultural chemicals. Additionally, it is used as a fuel additive and in the pharmaceutical industry for the synthesis of various medications. Due to its potential health and safety hazards, proper precautions and safety measures should be followed when working with this chemical.

InChI:InChI=1S/C7H14/c1-5-6-7(2,3)4/h5-6H,1-4H3/b6-5-

Upstream product

• 917-92-0 3,3-Dimethylbut-1-yne 
• 76347-02-9 C₉H₁₉LiSi 
• 71720-16-6 Trimethyl-((E)-1,3,3-trimethyl-but-1-enyl)-silane 
• 77613-59-3 (3R,4S)-4-tert-Butyl-3-methyl-2,2,2-triphenyl-2λ⁵-[1,2]oxaphosphetane 
• 630-19-3 pivalaldehyde 
• 1754-88-7 ethylenetriphenylphosphorane 
• 128399-07-5 tris(2-methoxymethoxyphenyl)phosphonioethanide 
• 17847-85-7 triethyl(ethylidene)phosphorane 
• 558-37-2 tert-butylethylene 

Downstream Products

• 3970-62-5 2,2-dimethyl-3-pentanol 
• 61184-91-6 (S)-4,4-dimethyl-2-pentanol 
• 83615-50-3 (R)-(-)-4,4-dimethyl-2-pentanol 
• 3204-04-4 cis-2-methyl-3-tert-butyl oxirane 
• 690-08-4 (E)-4,4-dimethyl-2-pentene 
• 762-62-9 4,4-dimethylpent-1-ene 
• 17414-46-9 2,4,4-trimethylpentanal 
• 55320-58-6 5,5-dimethylhexanal 
• 86576-20-7 (4R,5S)-5-tert-Butyl-4-methyl-3-phenyl-4,5-dihydro-isoxazole 

Relevant articles and documents

Novel ortho-Alkoxy-Substituted Phosphorus Ylides and Their Stereoselectivity in Wittig Reactions

The stereochemistry of the reactions between tris(2-methoxymethoxypheny)phosphonioethanide (1f), -butanide (2f), and -phenyl-methanide (3f) and a variety of aldehydes was investigated.Ylides having a β-unbranched aliphatic sidechain, such as 2f, and saturated straight-chain aldehydes give olefins with unprecedented cis-selectivity (cis/trans ca. 200:1).

Stoichiometric and Catalytic Homologation of Olefins on the Fischer-Trops Catalysts Fe/SiO2, Ru/SiO2, Os/SiO2, and Rh/SiO2. Mechanistic Implication in the Mode of C-C Bond Formation

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Mechanism, regiochemistry, and stereochemistry of the insertion reaction of alkynes with methyl(2,4-pentanedionato)(triphenylphosphine)nickel. A cis insertion that leads to trans kinetic products

This study reports the rapid reaction under mild conditions of internal and terminal alkynes with methyl(2,4-pentanedionato)(triphenylphosphine)nickel (1) in aromatic and ethereal solvents. In all cases vinylnickel products (2) are formed by insertion of the alkyne into the nickel-methyl bond. The regiochemistry is unusual; unsymmetrical alkynes give selectively the one regioisomer with the sterically largest substituent next to the nickel atom. So that the stereochemistry of the initial insertion could be investigated, an X-ray diffraction study of the reaction of 1 and diphenylacetylene was carried out. This showed that the vinylnickel complex formed by overall trans insertion was the product of the reaction. Furthermore, subsequent slow isomerization of this complex, to a mixture of it and the corresponding cis isomer, demonstrated that this trans addition product is the kinetic product of the reaction. In studies with other alkynes, the product of trans addition was not always exclusively (or even predominantly) formed, but the ratio of the stereoisomers formed kinetically was substantially different from the thermodynamic ratio. Isotope labeling, added phosphine, and other experiments have allowed us to conclude that the mechanism of this reaction does involve cis addition. However, a coordinatively unsaturated vinylnickel intermediate is initially formed, which can undergo rapid, phosphine-catalyzed cis-trans isomerization in competition with its conversion to the isolable phosphine-substituted products.