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Description
TCI D1252 4,4-Dimethyl-1-pentene, CAS 762-62-9, is a branched alkene featuring a terminal double bond and a tert-butyl group attached to the chain, which places it within the class of non-heterocyclic building blocks with pronounced steric character. In the laboratory, this compound is used as an experimental substrate in alkene reaction research, as a model monomer in polymerization studies, and as a comparison material in hydrocarbon analysis. Its skeleton, carrying a bulky group close to the reactive chain, makes it a frequent choice for researchers who want to examine how substituent size influences the course of a chemical reaction.
The distinctive property of this compound lies in the contrast between a terminal double bond that remains relatively open to reagents and a quaternary carbon centre that creates considerable steric hindrance nearby. This combination produces behaviour that differs from that of linear alkenes of comparable size, for example in catalytic reaction rates, in the tendency to form particular products, and in polymerization behaviour. In addition, the bulky alkyl group influences physical properties such as volatility and solubility in non-polar organic solvents, so the compound also serves usefully as a reference material for comparison.
In Indonesian laboratories, TCI D1252 is typically handled in university chemistry departments, polymer and catalysis research groups, and analytical laboratories that work with hydrocarbon systems. It is generally used at the bench scale for reaction trials, method development, and teaching demonstrations where a sterically demanding terminal alkene is required. Researchers commonly select it when a study design calls for a structurally well-defined branched alkene to be set against simpler linear counterparts under identical conditions.
Laboratory Applications
- Alkene reaction studies — the terminal double bond offers an accessible reactive site, while the neighbouring bulky group lets researchers observe how steric demand alters reaction outcomes.
- Polymerization research — the compound serves as a model monomer whose branched skeleton allows investigators to examine how substituent size affects chain growth and polymerization behaviour.
- Catalysis screening — because catalytic rates respond strongly to steric hindrance, this alkene is useful for probing catalyst tolerance toward substrates carrying a quaternary carbon centre.
- Hydrocarbon analysis — the well-defined branched structure makes it suitable as a comparison material when characterising or identifying hydrocarbon components in analytical work.
- Structure–reactivity investigations — the contrast with linear alkenes of similar size makes it a practical reference substrate for studies correlating molecular shape with chemical behaviour.
Specifications
- Brand: TCI
- CAS number: 762-62-9
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Product code: D1252
- Pack sizes: available in standard TCI catalogue packaging; please confirm the required size when ordering.
- Storage note: store in a cool, well-ventilated place, away from heat and ignition sources.
Handling and Storage
Store the product in its original tightly closed container, kept in a cool, dry and well-ventilated area away from heat, sparks, open flames and other ignition sources. Chemically resistant containers with secure closures are appropriate, and bottles should be reclosed promptly after each use to limit loss of the volatile material. Handle in a fume hood, use appropriate personal protective equipment including safety glasses, gloves and a laboratory coat, and avoid inhaling vapours or allowing contact with skin and eyes. Keep away from incompatible materials, and follow the manufacturer's safety data sheet together with local laboratory waste-disposal procedures.
