Question

Choose the correct name for compound given below :

(1) (4E)-5-Bromo-hex-4-en-2-yne 

(2) (2E)-2-Bromo-hex-4-yn-2-ene 

(3) (2E)-2-Bromo-hex-2-en-4-yne 

(4) (4E)-5-Bromo-hex-2-en-4-yne

Answer 1

Answer is (3) (2E)-2-Bromo-hex-2-en-4-yne

h.p.⇒ higher priority 

l.p.⇒ lower priority 

2E –2- bromo hex –2- en–4-yne