Chemical Reactions of Ethers

Question 1

Least reactive functional group

Answer 1

ethers

Question 2

cleavage of C-O bond

Answer 2

with hydrogen halides to yield alkyl halides

Question 3

reactivity of hydrogen halides

Answer 3

HI>HBr>HCl

Question 4

cleavage of ether takes place with

Answer 4

conc HI or HBr at high temperature

Question 5

if one of the alkyl group is tertiary

Answer 5

then the halide formed is tertiary

Question 6

if one of the alkyl group is secondary or primary

Answer 6

the lower alkyl group forms the alkyl halide

Question 7

halogenation of phenylalkyl ethers

Answer 7

anisole undergoes bromination in ethanoic acid and major product formed is para bromoanisole.

Question 8

friedel crafts reaction is with which catalyst

Answer 8

anhydrous AlCl3 (lewis acid)

Question 9

Friedel-Crafts reaction

Answer 9

the alkyl and acyl groups are introduced at the ortho and para positions (OCH3 always at 1 BUT CH3 EITHER AT 2(ortho) or 4(para). para is always majoe

Question 10

Nitration

Answer 10

Anisole reacts with h2so4 and hno3 to form nitroanisole at para(major) and at ortho(minor)