Chapter 16.8, Problem 31P

(a)

Interpretation Introduction

Interpretation:

The structure of the given compound (E)-Hydrazone of Benzaldehyde has to be drawn.

Concept introduction:

Imines can exists as stereoisomers.  The isomers are named using the E, Z system of nomenclature.  The lone pair has the low priority.

If the two high priority groups are on the same side of the double bond, then it is known as Z-isomer.

If the two high priority groups are on the opposite side of the double bond then it is known as E-isomer.

(b)

Interpretation Introduction

Interpretation:

The structure of the given compound (Z)-oxime of propiophenone has to be drawn.

Concept introduction:

Imines can exist as stereoisomers.  The isomers are named using the E, Z system of nomenclature. The lone pair has the low priority.

If the two high priority groups are on the same side of the double bond, then it is known as Z-isomer.

If the two high priority groups are on the opposite side of the double bond then it is known as E-isomer.