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Description
TCI D1279 2,5-Dimethylcyclohexanone (mixture of isomers) is a cyclic ketone built on a cyclohexanone skeleton bearing two methyl groups at the 2 and 5 positions, supplied as a mixture of cis and trans isomers. It belongs to the group of non-heterocyclic building blocks — starting materials that chemists use to construct more complex molecules through stepwise reactions. In organic synthesis laboratories, ketones of this type serve as reaction entry points because the carbonyl group is highly reactive toward nucleophiles while simultaneously activating the alpha positions for enolization, alkylation, and aldol condensation chemistry.
The characteristics that make this compound a preferred choice are the combination of a conformationally stable cyclohexanone ring and the presence of methyl substituents that impose a patterned steric hindrance. The 2,5-substitution pattern places one methyl group directly adjacent to the carbonyl and the other on the opposite side of the ring, allowing researchers to study how steric and stereoelectronic effects govern the direction of reagent attack. Because the material is a liquid under ordinary laboratory conditions, it is easy to measure with a micropipette or syringe and readily dissolves in common organic solvents, which simplifies the preparation of reaction mixtures.
In Indonesian laboratories, this building block is typically used in university and institutional organic synthesis work, in graduate research on carbonyl reactivity and stereochemistry, and in methodology development where a substituted cyclohexanone is needed as a model substrate. It is drawn from the same non-heterocyclic building block inventory that supports multi-step synthesis programmes, where a reliable, well-defined ketone starting material allows a planned reaction sequence to be carried out reproducibly from one batch to the next.
Laboratory Applications
- Aldol condensation studies — the activated alpha positions flanking the carbonyl allow enolate formation, making this ketone a practical substrate for teaching and investigating carbon–carbon bond construction.
- Nucleophilic addition chemistry — the highly reactive carbonyl group readily accepts nucleophiles, so the compound serves as a direct entry point into alcohol and derivative synthesis routes.
- Alpha-alkylation reactions — enolization at the positions adjacent to the carbonyl permits controlled introduction of new substituents onto the cyclohexanone ring during stepwise molecular construction.
- Stereochemistry and steric effect research — the 2,5-methyl substitution pattern creates patterned hindrance that lets researchers examine how reagents approach a conformationally stable ring system.
- Multi-step synthesis as a non-heterocyclic building block — chemists incorporate this defined starting material into planned reaction sequences that build progressively more complex target molecules.
Specifications
- Brand: TCI
- CAS Number: 932-51-4
- Product Code: D1279
- Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
- Physical Form: liquid under ordinary laboratory conditions; supplied as a mixture of cis and trans isomers
- Pack Sizes: available in the packaging options listed for this catalogue item
- Storage: store in a tightly closed container, following the manufacturer's stated storage conditions
Handling and Storage
Store the container tightly closed in a cool, dry, well-ventilated area away from heat sources, ignition sources, and direct sunlight, and keep it separated from strong oxidising agents. Because the material is a liquid, it should be kept in a sealed, chemically compatible bottle and returned to storage promptly after dispensing to limit evaporation and moisture uptake. Handle and transfer the compound inside a fume hood, wearing safety glasses, gloves, and a laboratory coat. Use a clean syringe or micropipette for measuring, label all working solutions clearly, and consult the manufacturer's safety data sheet before use and for waste disposal guidance.
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