Isomerisation of aldoses in pyridine in the presence of aluminium oxide

Autor:	Svein Morgenlie, Dag Ekeberg, Yngve Stenstrøm
Rok vydání:	2005
Předmět:	Arabinose Xylulose Pyridines Monosaccharides Organic Chemistry Mannose General Medicine Xylose Biochemistry Medicinal chemistry Analytical Chemistry Reaction rate chemistry.chemical_compound Isomerism chemistry Yield (chemistry) Pyridine Aluminum Oxide Aluminium oxide Organic chemistry
Zdroj:	Carbohydrate Research. 340:373-377
ISSN:	0008-6215
DOI:	10.1016/j.carres.2004.12.006
Popis:	Addition of aluminium oxide to boiling pyridine solutions of d -xylose, l -arabinose, d -mannose and d -glucose strongly increased the reaction rate of the aldose–ketose transformation. The maximum content of 2-ketose was reached after less than 2 h for the aldopentoses and 3 h for the aldohexoses. d -threo-2-Pentulose (xylulose) was prepared from d -xylose, and isolated as its O-isopropylidene derivative, the yield was nearly twice that compared to that usually obtained in the classical Lobry de Bruyn–Alberda van Ekenstein transformation in pyridine.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::69d5ed38e8562c8682d6bfe7efbc03c4 https://doi.org/10.1016/j.carres.2004.12.006 Zobrazit plný text záznamu Full Text from ScienceDirect