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Description
TCI D3968 4,4-Diethoxybutylamine is a bifunctional compound that combines a primary amine group at one end of the chain with a diethyl acetal group at the other. The acetal is essentially a protected form of an aldehyde, allowing the molecule to be carried through several reaction steps without the carbonyl group participating in unwanted reactions. In the laboratory, this material serves as a non-heterocyclic building block that lets researchers introduce a four-carbon chain terminating in an amine while simultaneously storing latent aldehyde potential for a subsequent cyclization or condensation step.
The property that makes this compound a preferred choice is the orthogonal reactivity between its two functional groups. The primary amine is strongly nucleophilic, so it is readily acylated, alkylated, subjected to reductive amination, or coupled into amides and sulfonamides under conventional conditions. The acetal group, meanwhile, remains stable under basic and neutral conditions but can be reopened to the aldehyde through acid hydrolysis whenever it is required. This combination is highly valuable for synthetic chemists designing stepwise routes, particularly when a free aldehyde would interfere with reactions in the earlier stages. The flexible butyl chain also provides conformational reach between the two reactive ends.
In Indonesian laboratories, this building block is typically used in synthetic organic chemistry research groups at universities and in research institutes working on the preparation of intermediates and target molecules. It suits fume-hood scale work where a multi-step route is planned and a protected aldehyde is needed from the outset. Researchers preparing heterocyclic scaffolds, exploring reductive amination chemistry, or building custom linkers commonly hold this reagent as part of their building-block inventory.
Laboratory Applications
Multi-step synthesis planning: the diethyl acetal masks the aldehyde so the primary amine can be manipulated first without competing carbonyl side reactions occurring along the route.
Amide and sulfonamide coupling: the strongly nucleophilic primary amine reacts readily with acyl chlorides, anhydrides, activated esters, and sulfonyl chlorides under standard laboratory coupling conditions.
Reductive amination chemistry: the terminal primary amine can be condensed with carbonyl partners and reduced, giving secondary or tertiary amines while the acetal end remains untouched.
Cyclization and condensation studies: acid hydrolysis unmasks the aldehyde at the chosen stage, releasing a carbonyl that can then close a ring or condense with a nucleophilic partner.
Linker and scaffold construction: the flexible four-carbon butyl chain provides conformational reach between the two reactive termini, useful when spacing two functional handles in a designed molecule.
Specifications
Brand: TCI (Tokyo Chemical Industry)
CAS number: 6346-09-4
Category: Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Product code: D3968
Pack sizes: available in standard TCI catalogue packaging; please confirm the pack size when ordering.
Storage note: keep tightly closed in a cool, dry place away from light and moisture.
Handling and Storage
Store the container tightly closed in a cool, dry, well-ventilated area, away from direct sunlight, heat sources, moisture, and acidic materials, since the acetal group is sensitive to acidic hydrolysis. Keep the reagent in its original manufacturer container or in a compatible tightly sealed glass bottle, and consider storing under an inert atmosphere for material that will be kept over a long period. As with all amine reagents, handle inside a fume hood and wear appropriate personal protective equipment, including safety goggles, chemically resistant gloves, and a laboratory coat. Avoid inhalation of vapours and contact with skin and eyes. Segregate from strong oxidizing agents and strong acids during storage. Always consult the manufacturer's Safety Data Sheet before use and follow institutional chemical waste disposal procedures.
