Topic
Aldose
About: Aldose is a research topic. Over the lifetime, 1270 publications have been published within this topic receiving 27197 citations. The topic is also known as: aldoses.
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TL;DR: In this paper, cycloaddition occurred predominantly rather than allylation in the presence of boron trifluoride etherate to give oxetane derivatives as major products together with small amounts of homoallyl alcohols.
10 citations
TL;DR: In this paper, the stereoselective C(4) alkylations of 6-exo,7-Exo-(isopropylidenedioxy)-2,8-dioxabicyclo[3.2.1] octan-3-one with Mel and PhCH2OCH2Br are presented; the products so-obtained have been converted to partially protected 5,6-dideoxy-5-C-methyl-D,L-ribo-hexofuranose and 5-deoxy -5
Abstract: The stereoselective C(4) alkylations of 6-exo,7-exo-(isopropylidenedioxy)-2,8-dioxabicyclo[3.2.1]octan-3-one with Mel and PhCH2OCH2Br are presented; the products so-obtained have been converted to partially protected 5,6-dideoxy-5-C-methyl-D,L-ribo-hexofuranose and 5-deoxy-5-C-methyl-D,L-talo-hexofuranose.
10 citations
TL;DR: In this article, a mechanism involving a termolecular rate-determining reaction among hypochlorite ion, hydroxide ion, and anion derived from the β-anomer of aldose is suggested.
Abstract: The kinetics of the oxidation of four aldoses, xylose, arabinose, mannose, and galactose have been investigated in highly alkaline media. The reactions show a brief initial induction period after which first-order dependence on both chloramine T, and the aldose follows. The order in hydroxide ions has been found to be second but shows a slight decrease at high concentration of alkali. The energies of activation have been obtained as 22–23·8 and 28–30 kcal mol–1 for the oxidation of pentoses and hexoses respectively. A mechanism involving a termolecular rate-determining reaction among hypochlorite ion, hydroxide ion, and the anion derived from the β-anomer of aldose is suggested. The oxidation rates follow the order xylose > arabinose > galactose > mannose.
10 citations
TL;DR: Iodine monochloride (ICl) was discovered to be a highly efficient, green oxidant, which can oxidize aldose hemiacetals, diarylmethanols, arylalkylmethansols, anddialkylmETHanols to the corresponding corresponding green oxidants.
10 citations
Patent•
17 Jun 1976
TL;DR: In this article, a process for converting aldoses or derivatives thereof into ketoses and derivatives thereof which takes place in the presence of oxyanion or mixed complex oxyanions of germanium or tin is described.
Abstract: A process for converting aldoses or derivatives thereof into ketoses or derivatives thereof which takes place in the presence of oxyanions or mixed complex oxyanions of germanium or tin which form stronger complexes with the ketoses or derivatives thereof than with the aldoses or derivatives thereof. Using the process the equilibrium position in the aldose-ketose reaction is shifted towards higher proportions of ketose. The process is very applicable to the conversion of glucose to fructose particularly when this conversion takes place enzymatically in the presence of glucose isomerase.
10 citations