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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 ...
Potassium nitrate can be made by combining ammonium nitrate and potassium hydroxide. NH 4 NO 3 + KOH → NH 3 + KNO 3 + H 2 O. 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.
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 ...
C 6 H 4 BrNO 2: 5-bromonicotinic acid: 20826-04-4 C 6 H 4 ClNO 2: 2-chloronicotinic acid: 2942-59-8 C 6 H 4 ClN 3: 4-Chlorophenyl azide: C 6 H 4 ClNO 2: 6-chloro-2-pyridinecarboxylic acid: 4684-94-0 6-chloronicotinic acid: 5326-23-8 C 6 H 4 N 4: tricyanoaminopropene: C 6 H 4 O 2: orthobenzoquinone: 583-63-1 parabenzoquinone quinone: 106-51-4 C ...
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).
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 .
Potassium nitrate. Potassium nitrate is ... Synonyms: Saltpetre; Niter/Nitre; Nitric acid potassium salt; Salt Peter CAS No.: 7757-79-1 Molecular Weight: 101.1 ...
Potassium benzoate (E212), the potassium salt of benzoic acid, is a food preservative that inhibits the growth of mold, yeast and some bacteria. It works best in low- pH products, below 4.5, where it exists as benzoic acid.