Concept explainers
a)
Interpretation:
The configuration as R or S is to be assigned to each chirality center in the monosaccharide given and whether it is a D sugar or L sugar is to be stated.
Concept introduction:
In Fischer projection formula, a tetrahedral carbon is represented by two crossed lines. The horizontal line represents bonds coming out of the page and vertical lines represent bonds moving in to the page.
For assigning R or S configuration, the four groups attached to the chiral center are arranged in the order of priority by applying sequence rules. The molecule is then oriented in such a way that the group of lowest priority points away from the viewer. If the arrangement of highest priority to second highest priority to third highest priority is clockwise then R configuration is assigned. If the arrangement of highest priority to second highest priority to third highest priority is counterclockwise then S configuration is assigned.
In Fischer projections, D sugars have the hydroxyl group on right at the farthest chirality center and L sugars have this hydroxyl group on left.
To assign:
The configuration as R or S to each chirality center in the monosaccharide given and to state whether it is a D sugar or L sugar.
b)
Interpretation:
The configuration as R or S is to be assigned to each chirality center in the monosaccharide given and whether it is a D sugar or L sugar is to be stated.
Concept introduction:
For assigning R or S configuration, the four groups attached to the chiral center are arranged in the order of priority by applying sequence rules. The molecule is then oriented in such a way that the group of lowest priority points away from the viewer. If the arrangement of highest priority to second highest priority to third highest priority is clockwise then R configuration is assigned. If the arrangement of highest priority to second highest priority to third highest priority is counterclockwise then S configuration is assigned.
To assign:
The configuration as R or S to each chirality center in the monosaccharide given and to state whether it is a D sugar or L sugar.
c)
Interpretation:
The configuration as R or S is to be assigned to each chirality center in the monosaccharide given and whether it is a D sugar or L sugar is to be stated.
Concept introduction:
In Fischer projection formula, a tetrahedral carbon is represented by two crossed lines. The horizontal line represents bonds coming out of the page and vertical lines represent bonds moving in to the page.
For assigning R or S configuration, the four groups attached to the chiral center are arranged in the order of priority by applying sequence rules. The molecule is then oriented in such a way that the group of lowest priority points away from the viewer. If the arrangement of highest priority to second highest priority to third highest priority is clockwise then R configuration is assigned. If the arrangement of highest priority to second highest priority to third highest priority is counterclockwise then S configuration is assigned.
To assign:
The configuration as R or S to each chirality center in the monosaccharide given and to state whether it is a D sugar or L sugar.
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Chapter 25 Solutions
EBK ORGANIC CHEMISTRY
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