TCI E0715 Ethyl 4-Pentenoate is the ethyl ester of 4-pentenoic acid, a short-chain molecule that carries a terminal double bond at one end and an ester group at the other. TCI supplies it as a non-heterocyclic building block whose appeal lies precisely in its simplicity: two functional groups separated far enough apart that they can be reacted in sequence without interfering with one another. In the laboratory, a bifunctional compound of this kind serves as a practical linker whenever researchers need to extend a carbon chain while leaving a connection point available for the next stage of transformation.
The property that makes it a widely chosen reagent is the terminal double bond, which is not sterically hindered and is therefore highly responsive to addition reactions such as hydrogenation, hydroboration, epoxidation, dihydroxylation, thiol addition, and olefin metathesis. Because the double bond is not conjugated with the ester group, each functional group reacts according to its own character, and selective chemistry becomes considerably easier to control. The ester group itself can be hydrolysed, reduced to the corresponding alcohol, transesterified, or converted into an amide, giving the synthetic chemist several independent handles on a single small molecule.
As a short-chain aliphatic ester, this material fits naturally into the routine of Indonesian laboratories engaged in organic synthesis and methodology development. It is typically used in university research groups, institutional chemistry laboratories, and industrial R&D units that prepare intermediates on a small to moderate scale. Its role is usually that of a starting material or intermediate in multi-step sequences, where a reliable, well-characterised building block from an established supplier shortens the path from planning to bench work.
- Olefin metathesis substrate — the unhindered terminal alkene participates readily in cross and ring-closing metathesis, allowing chemists to build larger carbon frameworks while the ester group remains untouched.
- Hydroboration and hydrogenation studies — the terminal double bond offers a clean, accessible site for addition chemistry, making the compound a straightforward substrate for developing or benchmarking reduction and borane addition methods.
- Epoxidation and dihydroxylation work — the isolated alkene can be oxidised to an epoxide or a diol, introducing oxygen functionality at a defined position without competing reaction at the ester end.
- Thiol-ene conjugation and linker chemistry — the terminal olefin readily accepts thiol addition, so the molecule serves as a bifunctional connector that leaves the ester available for later coupling or modification.
- Ester transformation and chain extension — the ethyl ester can be hydrolysed, reduced to an alcohol, transesterified, or converted to an amide, supporting sequential multi-step synthesis from a single simple starting material.
| Brand | TCI (Tokyo Chemical Industry) |
|---|---|
| CAS number | 1968-40-7 |
| Molecular formula | — |
| Purity | — |
| Category | Chemistry > Building Blocks > Non-Heterocyclic Building Blocks |
| Pack sizes | available in standard TCI research-scale packaging; please confirm the current pack options when ordering |
| Physical form | — |
| Storage | keep in a cool, dark place in a tightly sealed container, following the storage guidance on the manufacturer's label |
- Product code: E0715
Store the container tightly closed in a cool, dark, and well-ventilated area, away from heat sources, open flames, and direct sunlight, and keep it separated from strong oxidising agents. Retain the material in its original supplier packaging wherever possible; where transfer is necessary, use clean glass or other chemically compatible containers with secure closures, and label them clearly. Handle inside a fume hood, wearing safety goggles, chemical-resistant gloves, and a laboratory coat. Avoid inhalation of vapour and contact with skin or eyes, close containers immediately after use to limit evaporation and moisture uptake, and always consult the manufacturer's safety data sheet before handling and prior to disposal of residues.
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