You visited us 13 times! Enjoying our articles? Unlock Full Access!

Alcohols as Nucleophiles and Electrophiles

Which of the ...

Question

Which of the following is the proper method to prepare n-hexane from n-propyl alcohol?
$C H_{3} C H_{2} C H_{2} O H X - \to C H_{3} C H_{2} C H_{2} B r Y \to C H_{3} (C H_{2})_{4} C H_{3}$

(X) \to H B r, (Y) \to H C N

No worries! We‘ve got your back. Try BYJU‘S free classes today!

(X) \to H B r, (Y) \to N a, e t h e r

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

(X) \to B r_{2}, (Y) \to C H_{3} C N

No worries! We‘ve got your back. Try BYJU‘S free classes today!

(X) \to B r_{2}, (Y) \to K M n O_{4}

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is D $(X) \to H B r, (Y) \to N a, e t h e r$
To prepare n-hexane from n-propyl alcohol:
$C H_{3} C H_{2} C H_{2} O H X - \to C H_{3} C H_{2} C H_{2} B r Y \to C H_{3} (C H_{2})_{4} C H_{3}$
Step 1: is a nucleophilic substitution reaction of $O H$ by $B r$ . This can be done by $H B r$
Step 2: this reaction is $R X \to R - R$ . It is the Wurtz Reaction in the presence of $N a$ and dry ether
Thus the reaction has $(X) = H B r, (Y) = N a, e t h e r$
$C H_{3} C H_{2} C H_{2} O H H B r - -- \to C H_{3} C H_{2} C H_{2} B r N a / e t h e r - ---- \to C H_{3} (C H_{2})_{4} C H_{3} + 2 N a B r$

Suggest Corrections

Similar questions

C H_{3} - C H_{2} - C H_{2} B r X - \to P r o d u c t Y \to C H_{3} - C | B r H - C H_{3}

B r_{2}

H_{2} S O_{4}

H B r

X

X

K O H

Y

X

Y

A = {x : x = 2 n + 1, n \in W}

B = {y : y = 2 n, n \in N} .

R

A

B,

R = {(x, y) : x < y, x \in N, y \in N}

S = {(x, y) : x + y = 10, x \in N, y \in N}

T = {(x, y) : x = y o r x - y = 1, x \in N, y \in N}

Join BYJU'S Learning Program