Question

Se dau compusii :
(1) : 2,4- heptadiena; (2): 1,4-difenil-1,3-butadiena;
Cati izomeri geometrici prezinta acestia ?
A. (1): 3 ; (2): 4;
B. (1): 4 ; (2): 4;
C. (1): 3 ; (2): 3;
D. (1): 4; (2): 3;
E. (1): 4; (2): 2.

Answer 1

(1) CH3-CH=CH-CH=CH-CH2-CH3 :     4 izomeri ;
(2)  C6H5-CH=CH-CH=CH-C6H5  :   3 izomeri
(D)