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Your search keyword '"Yeldez El Kilany"' showing total 2 results
Start Over Author "Yeldez El Kilany" Publisher royal society of chemistry (rsc)
2 results on '"Yeldez El Kilany"'

1. Heterocycles from carbohydrate precursors. Part 41. Mode of formation of 1,3-dioxolanes and 1,3-dioxanes from 1-C-substituted glycerols during their benzylidenation

Author

El Sayed H. El Ashry, A. Mousaad, and Yeldez El Kilany

Subjects
chemistry.chemical_compound, Chemistry, Stereochemistry, Dioxolane, Organic chemistry, Triol, Carbohydrate
Abstract

The benzylidenation of 1-C-substituted L-threo- and D-erythro-glycerols has been studied. The correlation of the stereochemical configuration of the glycerolyl part with the formation and location of either the dioxolane or dioxane rings is discussed. The structures have been deduced by a combination of both physical and chemical methods.

Published
1988
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2. Heterocycles from carbohydrate precursors. Part 40. Kinetic and thermodynamic products of ketalation of 1-C-substituted L-threo-glycerol: a regioselective formation of 1,3-dioxolanes

Author

El Sayed H. El Ashry, Farrag Singab, and Yeldez El Kilany

Subjects
chemistry.chemical_classification, chemistry.chemical_compound, chemistry, Dioxolane, Glycerol, Organic chemistry, Regioselectivity, Triol, Carbohydrate, Ring (chemistry), Kinetic energy, Lactone
Abstract

The mode of ketalation of some L-threo-glycerols has been studied. The kinetic product has an α-terminal (dioxolane) ring. The formation of β(dioxane) ring was also detected. The thermodynamic product has an α-threo-(dioxolane) ring. The regioselectivity of the reaction and the structures of the products have been studied.

Published
1988
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