Aldehydes

5-Hydroxy-4-methoxy-2-nitrobenzaldehyde is a substrate molecule that can be minimised to the corresponding oxime, which can then be oxidised to form an aldehyde. The product of this reaction is a conformationally restricted dienone. This compound has been synthesized using a number of different methods, including oxidation by sodium dichromate. 5-Hydroxy-4-methoxy-2-nitrobenzaldehyde is a phenolic compound with two aromatic rings and one carbon ring. It has natural product properties and is used as a chemical skeleton in the synthesis of other compounds.

3-Bromothiophene-2-carbaldehyde is an organic compound that has been shown to have antibacterial activity. It can be synthesized by reacting triethyl orthoformate with methyl ketones in the presence of a photocatalyst such as titanium dioxide or zinc oxide. This reaction produces 3-bromothiophene-2-carboxylic acid which reacts with ammonia and hydrogen bromide to form 3-bromothiophene-2-carbaldehyde. 3-Bromothiophene-2-carbaldehyde has been shown to inhibit the growth of cancer cells and induce apoptosis, which may be due to its ability to inhibit angiogenesis. The anticancer properties are most likely due to its ability to bind DNA and inhibit protein synthesis, leading to cell death.

3-Butoxybenzaldehyde is an electron donor. It is used in the synthesis of heterocyclic compounds and as a reagent or postulated intermediate in the formation of epoxides, ethylene, and peroxides. 3-Butoxybenzaldehyde also functions as a precursor to other oxygenated compounds. 3-Butoxybenzaldehyde has been shown to undergo both aldol condensation and interaction with other compounds.

3-Ethynylbenzaldehyde is a tryptic, nitro compound that contains terminal alkynes and has functional groups. The functional theory of this compound suggests that it may be used as a chemosensor for the detection of acidic compounds. 3-Ethynylbenzaldehyde reacts with sodium trifluoroacetate to form an aldehyde, which is then oxidized to an acid by the addition of water. This acid can be detected using NMR spectroscopy. 3-Ethynylbenzaldehyde has been shown to react with sodium trifluoroacetate in solid form at room temperature and above. The resulting product is a yellow crystalline solid that can be identified by its UV spectrum.

5-Chloro-2-fluorobenzaldehyde is an efficient method for synthesizing substituted benzoic acid derivatives. It is a useful reagent in the acylation reaction. 5-Chloro-2-fluorobenzaldehyde also has high yields and can be used as a substitute for other more toxic or expensive compounds.

(E)-2-Hexadecenal is an asymmetric molecule that is a reactive and carcinogenic compound. It has been shown to induce c-Jun phosphorylation in the human carcinoma cell lines, leading to physiological changes. (E)-2-Hexadecenal has also been used to induce chemiluminescence in vitro, which can be used for analytical chemistry. It is made by a hydroxyl group on a fatty acid with a biofuel reaction. This molecule may also have pro-apoptotic properties due to its chemical biology and ability to affect mitochondrial membrane potentials.