General, Organic, and Biological Chemistry - 4th edition
General, Organic, and Biological Chemistry - 4th edition
4th Edition
ISBN: 9781259883989
Author: by Janice Smith
Publisher: McGraw-Hill Education
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Chapter 15, Problem 64P
Interpretation Introduction

(a)

Interpretation:

The chiral center in the leucine needs to be located.

Concept introduction:

A molecule is said to be chiral if it is asymmetric in nature. The chiral carbon is defined as a carbon atom attached to 4 different groups. The non-superimposable mirror images of the chiral molecule are known as its enantiomer. Molecules with planes of symmetry do not have chirality. The plane bisecting an object into two identical halves is known as the plane of symmetry. A molecule having a plane of symmetry in any conformation is always identical to its mirror image and such molecules are achiral in nature.

Interpretation Introduction

(b)

Interpretation:

The enantiomers of leucine needs to be drawn.

Concept introduction:

The enantiomer is a non-superimposable mirror image of the molecule having a chiral center. A molecule is said to be chiral if it is asymmetric in nature. The chiral carbon is defined as a carbon atom attached to 4 different groups.

Interpretation Introduction

(c)

Interpretation:

The Fischer projections for enantiomers of Leucine needs to be drawn.

Concept introduction:

For a molecule with a chiral center, the Fischer projection formula is written to describe the stereo arrangement of atoms in two dimensions. For large molecules with more than 1 stereocenters are also represent their stereochemistry using the Fischer Projection. The carbon chain of the molecule containing the chiral carbon center is represented as a vertical line with chiral carbon at the center. Two other groups are then horizontally arranged around the chiral carbon atom.

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Label the chirality center (if one exists) in each compound. A compound may contain zero or one chirality center.
1 enantiomer (1 chiral compound) 1:1 mix of HCI enantiomers mixture of diastereomers achiral 1 enantiomer (1 chiral compound) 1:1 mix of f) HBr enantiomers mixture of CI CI diastereomers achiral 1 enantiomer (1 chiral compound) 1:1 mix of g) H-SO4 (cat), H3CОН enantiomers mixture of diastereomers OCH3 achiral
Translate the ball-and-stick model to a shorthand structure, and label the two chirality centers in vitamin K. Vitamin K is essential to blood clot formation. A defi ciency of this vitamin may lead to excessive and often fatal bleeding.

Chapter 15 Solutions

General, Organic, and Biological Chemistry - 4th edition

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