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Benzaldehyde (C 6 H 5 CHO) is an organic compound consisting of a benzene ring with a formyl substituent. It is among the simplest aromatic aldehydes and one of the most industrially useful. It is a colorless liquid with a characteristic almond -like odor , and is commonly used in cherry -flavored sodas . [ 5 ]
In the lab, phenyl-2-nitropropene is produced by the reaction of benzaldehyde and nitroethane in the presence of a basic catalyst like n-butylamine.The reaction is a nitroaldol reaction, and is a variant of a Knoevenagel condensation reaction, which is one of a broader class of reactions called Henry condensations, or simply Henry reactions.
The reaction is named after Russian organic chemist Vyacheslav Tishchenko, who discovered that aluminium alkoxides are effective catalysts for the reaction. [ 1 ] [ 2 ] [ 3 ] In the related Cannizzaro reaction , the base is sodium hydroxide and then the oxidation product is a carboxylic acid and the reduction product is an alcohol .
In organic chemistry, the benzoin addition is an addition reaction involving two aldehydes (−CH=O). The reaction generally occurs between aromatic aldehydes or glyoxals (OCH=CHO), [1] [2] and results in formation of an acyloin (−C(O)CH(OH)−). In the classic example, benzaldehyde is converted to benzoin (PhCH(OH)C(O)Ph). [3]
Therefore, the product of the reaction is not a bicyclic structure (see tropinone and pseudopelletierine) but a 4-piperidone. The synthesis of tropinone can be seen as a variation of the Petrenko-Kritschenko reaction in which the two aldehyde functions are covalently linked in a single molecule.
2-Carboxybenzaldehyde is a chemical compound.It consists of a benzene ring, with an aldehyde and a carboxylic acid as substituents that are ortho to each other. The compound exhibits ring–chain tautomerism: the two substituents can react with each other to form 3-hydroxyphthalide, a cyclic lactol.
Of its many reactions, 2-methylbenzaldehyde undergoes BF 3-induced Rothemund condensation with pyrrole to give atropoisomers of tetrakis(o-tolyl)porphyrin. [2] It is one of main benzaldehyde component of automobile exhaust. [3]
1,2,3,6-Tetrahydrobenzaldehyde is an organic compound with the formula C 6 H 9 CHO. This colorless liquid is formally a partially hydrogenated derivative of benzaldehyde.It is produced by the Diels-Alder reaction of acrolein to butadiene.