The Fischer projection formula of the aldotetrose represented by the model is to be drawn and the configuration as R or S is to be assigned to each chirality center. 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 draw: The Fischer projection formula of the aldotetrose represented by the model and to assign the configuration as R or S to each chirality center.

Question

In mass spectrometry, alpha cleavages are common in molecules with heteroatoms. Draw the two daughter ions that would be observed in the mass spectrum resulting from an alpha cleavage of this molecule. + NH2 Q Draw Fragment with m/z of 72

Answer 1

Question

Chapter 25.2, Problem 5P

Interpretation Introduction

Interpretation:

The Fischer projection formula of the aldotetrose represented by the model is to be drawn and the configuration as R or S is to be assigned to each chirality center.

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 draw:

The Fischer projection formula of the aldotetrose represented by the model and to assign the configuration as R or S to each chirality center.

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