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2-Hydroxy-5-methoxybenzaldehyde is an organic compound and an isomer of vanillin. ... It can be reduced by sodium borohydride in ethanol to form 2-hydroxy-5 ...
Sodium borohydride, also known as sodium tetrahydridoborate and sodium tetrahydroborate, [5] is an inorganic compound with the formula Na B H 4 (sometimes written as Na[BH 4]). It is a white crystalline solid, usually encountered as an aqueous basic solution. Sodium borohydride is a reducing agent that finds application in papermaking and dye ...
BOP has also been used in the reduction of carboxylic acids to primary alcohols with sodium borohydride (NaBH 4). [6] Its use raises safety concerns since the carcinogenic compound HMPA is produced as a stoichiometric by-product.
Diphenylmethanol may be prepared by a Grignard reaction between phenylmagnesium bromide and benzaldehyde [citation needed]. An alternative method involves reducing benzophenone with sodium borohydride or with zinc dust or with sodium amalgam and water.
In the classic example, benzaldehyde is converted to benzoin (PhCH(OH)C(O)Ph). [3] The benzoin condensation was first reported in 1832 by Justus von Liebig and Friedrich Wöhler during their research on bitter almond oil. [4] The catalytic version of the reaction involving cyanide was developed by Nikolay Zinin in the late 1830s. [5] [6 ...
The by-products are dimethyl sulfide (Me 2 S), carbon monoxide (CO), carbon dioxide (CO 2) and – when triethylamine is used as base – triethylammonium chloride (C 6 H 15 NHCl). The related N-tert-Butylbenzenesulfinimidoyl chloride combines both the sulfur(IV), the base, and the activating Lewis acid in one molecule.
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 original Betti base synthesized from 2-naphthol and the imine produced from the reaction of benzaldehyde and ammonia. The product of the Betti reaction is called the Betti base. The stereochemistry of the base was resolved into two isomers by using tartaric acid. Uses for the Betti base and its derivatives include: [1] [3] [4]