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Piperidine is widely used to convert ketones to enamines. [23] Enamines derived from piperidine are substrates in the Stork enamine alkylation reaction. [24] Upon treatment with calcium hypochlorite, piperidine converts to N-chloropiperidine, a chloramine with the formula C 5 H 10 NCl.
The Curtin–Hammett principle is a principle in chemical kinetics proposed by David Yarrow Curtin and Louis Plack Hammett.It states that, for a reaction that has a pair of reactive intermediates or reactants that interconvert rapidly (as is usually the case for conformational isomers), each going irreversibly to a different product, the product ratio will depend both on the difference in ...
A Knoevenagel condensation is demonstrated in the reaction of 2-methoxybenzaldehyde 1 with the thiobarbituric acid 2 in ethanol using piperidine as a base. [7] The resulting enone 3 is a charge transfer complex molecule.
Piperidine (hexahydropyridine) Cyclopentylamine (cyclopentanamine) 1-Methylpyrrolidine; 2-Methylpyrrolidine This page was last edited on 28 August 2022, at 17:16 ...
The Ritchie equation, derived in 1972, is another free-energy relationship: [6] [7] [8] = + where N + is the nucleophile dependent parameter and k 0 the reaction rate constant for water. In this equation, a substrate-dependent parameter like s in
Piperidine, a cyclic six-membered amine that results from hydrolysis of piperine; Piperic acid, the carboxylic acid also derived from hydrolysis of piperine; Capsaicin, the active piquant chemical in chili peppers; Allyl isothiocyanate, the active piquant chemical in mustard, radishes, horseradish, and wasabi
Piperidine is produced by hydrogenation of pyridine with a nickel-, cobalt-, or ruthenium-based catalyst at elevated temperatures. [100] The hydrogenation of pyridine to piperidine releases 193.8 kJ/mol, [ 101 ] which is slightly less than the energy of the hydrogenation of benzene (205.3 kJ/mol).
The Dakin oxidation. The Dakin oxidation (or Dakin reaction) is an organic redox reaction in which an ortho- or para-hydroxylated phenyl aldehyde (2-hydroxybenzaldehyde or 4-hydroxybenzaldehyde) or ketone reacts with hydrogen peroxide (H 2 O 2) in base to form a benzenediol and a carboxylate.