question_answer

The correct IUPAC name of

A)  (2E, 4E) - 3-ethyl-2, 4-hexadiene

B)  (2Z, 4E) - 3-ethyl-2, 4-hexadiene

C)  (2Z, 4Z) - ethyl-2, 4-hexadiene

D)  (2E, 4Z) - ethyl-2, 4-hexadiene

E)  (2E, 4Z) - ethane-2, 4-hexadiene

Correct Answer: A

Solution :

                IUPAC name of the given figure is ?                   (2E, 4E)-3-ethyl-2, 4- hexadiene ?                    (entgegen. opposite) ?                   (Z) (Zu sammen, together) ?                   If two heavier or lighter groups are on same side with respect C = C bond, we call the isomer (Z)-isomer and if one lighter and one heavier group is on opposite side with respect to C = C bond, then it will be -isomer.