The four different alkenes formed by treating ( R ) -3-bromo-2,3-dimethylpentane with sodium hydroxide are needed to be drawn and arrange them in order of their increasing stability with stating which the major product has to be identified. Concept Introduction: IUPAC name describes the configurations of a molecule by following rules. 1. Identify the parent carbon chain and the respective position of attached groups. 2. The sequence of numbering of attached groups on chiral carbon atom in a molecule is described by R/S notation. The numbering is assigned on the basis of molecular weight of attached atoms to the chiral carbon. 3. If the sequence of the numbering follows clockwise direction the chiral atom is assigned as R configuration. 4. If the sequence of the numbering follows anticlockwise direction the chiral atom is assigned as S configuration. Elimination Reaction: It is just reverse reaction of addition where substituent from the given molecule is removed via E1 (the reaction depends only on the substrate involved in the reaction) or E2 (the reaction depends on both of the substituents in the reaction) mechanism. Bond-line structure of a molecule: carbon atoms with their attached hydrogens are represented by line segments. The parent carbon chain is drawn in a zig-zag fashion. Attached groups (other than alkyl) are represented with a labelled line segment.

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Chapter 7, Problem 58PP

Interpretation Introduction

Interpretation:

The four different alkenes formed by treating (R)-3-bromo-2,3-dimethylpentane with sodium hydroxide are needed to be drawn and arrange them in order of their increasing stability with stating which the major product has to be identified.

Concept Introduction:

IUPAC name describes the configurations of a molecule by following rules.

1. Identify the parent carbon chain and the respective position of attached groups.

2. The sequence of numbering of attached groups on chiral carbon atom in a molecule is described by R/S notation. The numbering is assigned on the basis of molecular weight of attached atoms to the chiral carbon.

3. If the sequence of the numbering follows clockwise direction the chiral atom is assigned as R configuration.

4. If the sequence of the numbering follows anticlockwise direction the chiral atom is assigned as S configuration.

Elimination Reaction: It is just reverse reaction of addition where substituent from the given molecule is removed via E1 (the reaction depends only on the substrate involved in the reaction) or E2 (the reaction depends on both of the substituents in the reaction) mechanism.

Bond-line structure of a molecule: carbon atoms with their attached hydrogens are represented by line segments. The parent carbon chain is drawn in a zig-zag fashion. Attached groups (other than alkyl) are represented with a labelled line segment.

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