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4-Carboxybenzaldehyde (CBA) is an organic compound with the formula OCHC 6 H 4 CO 2 H. It consists of a benzene ring substituted with both an aldehyde and a carboxylic acid, with these functional groups on opposite corners of the ring. This compound is formed in 0.5% yield as a byproduct in the production terephthalic acid from p-xylene. Since ...
An alternative way of producing potassium nitrate without a by-product of ammonia is to combine ammonium nitrate, found in instant ice packs, [30] and potassium chloride, easily obtained as a sodium-free salt substitute. NH 4 NO 3 + KCl → NH 4 Cl + KNO 3. Potassium nitrate can also be produced by neutralizing nitric acid with potassium ...
4-Formylphenyl boronic acid crystallizes in colorless needles [1] or is obtained as an odorless, whitish powder, which dissolves little in cold but better in hot water. The compound is quite stable [3] and readily forms dimers and cyclic trimeric anhydrides, which complicate purification and tend to protodeboronize, a secondary reaction that occurs frequently in the Suzuki coupling, with ...
Dehydration by means of strong acid gives 3-Butylisocarbostyril [132-90-1] (8). Phosphorus oxychloride converts the oxygen function to the corresponding chloride via the enol forms 3-butyl-1-chloroisoquinoline [87-06-9] (9). Displacement of halogen with the sodium salt from 2-dimethylaminoethanol (10) affords dimethisoquin (11).
A potassium-ion battery or K-ion battery (abbreviated as KIB) is a type of battery and analogue to lithium-ion batteries, using potassium ions for charge transfer instead of lithium ions. It was invented by the Iranian/American chemist Ali Eftekhari (President of the American Nano Society) in 2004. [1]
It also can be prepared by treating benzaldehyde under nitration conditions, a process that initially converts the aldehyde to the acid. 4-Nitrobenzoic acid is a precursor to 4-aminobenzoic acid , which is in turn used to prepare the anesthetic procaine . 4-Nitrobenzoic acid is prepared by oxidation of 4-nitrotoluene .
In a laboratory procedure, the oxidation of naphthalene with alkaline potassium permanganate is given, which, however, yields only a yield of 39% 2-carboxybenzaldehyde. [9] Also the oxidation of naphthalene with ozone to 2-formylbenzoic acid offers no significant advantages. [10] Synthese von 2-Carboxybenzaldehyd aus Naphthalin
Potassium nitrate is an oxidizer so storing it near fire hazards or reducing agents should be avoided to minimise risk in case of a fire. Product Identification [ edit ]