Studies on Enolisation of Some β-Diketones by Spectrophotometric Method

Autor:	M. C. Gupta, A.D. Taneja, K. P. Srivastava
Rok vydání:	1972
Předmět:	Formamide Chloroform chemistry.chemical_element General Chemistry Acetoacetanilide Medicinal chemistry Nitrogen Enol chemistry.chemical_compound chemistry Organic chemistry Phenyl group Dimethylformamide Methanol
Zdroj:	Journal of the Chinese Chemical Society. 19:115-126
ISSN:	0009-4536
Popis:	Enolisation of acetoacetanilide (AAAH) acetoacet ortho-toluidide (AATH), 2, 4-acetoacetxylidide (AAXH), acetoacet-ortho-chloroanilide (CAAAH), acetoacetortho-anisidide (OAAAH), benzoyl-acetanilide (BAAH) and benzoyl-meta-nitro-acetanilide (NBAAH) have been studied in different solvents of varying polarities, ranging from chloroform (z=63.2) to methanol (Z=83.6) by ultraviolet spectroscopic methods. The low percentages of enol contents in formamide, dimethylformamide and dimethylsulphoxide, may be due to the formation of charge transfer complexes of these solvents with the diketones. Free energy of tautomerisation has also been calculated. The substituents on the phenyl group attached to the nitrogen have no effect on enolisation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3694bdc94fef51c999853899af96b450 https://doi.org/10.1002/jccs.197200017 Zobrazit plný text záznamu Plný text