EASY

Earn 100

Give the reaction of acid hydrolysis of ether.

Important Questions on Alcohols, Phenols and Ethers

MEDIUM

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

What is meant by hydroboration-oxidation reaction? Illustrate it with an example.

EASY

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

When acetone is treated with Grignard’s reagent, followed by hydrolysis, the product formed is:

EASY

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Which of the following are used to convert

RCHO

into

{RCH}_{2} OH

MEDIUM

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

How can propan

- 2 -

one be converted into tert-butyl alcohol?

EASY

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Ethyl propanoate on reduction with

{LiAlH}_{4}

yields

MEDIUM

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Point out the incorrect Grignard reaction.

HARD

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Ester

A (C_{4} H_{8} O_{2}) + \underset{(2 parts)}{{CH}_{3} MgBr} \overset{H_{3} O^{+}}{\to} B \underset{(alcohol)}{(C_{4} H_{10} O)}

. Alcohol

B

reacts fastest with Lucas reagent. Hence,

A

and

B

are?

HARD

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Question Image

The product

(s)

is/are

HARD

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Show how would you synthesise the following alcohol from appropriate alkenes?

Question Image

MEDIUM

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Oxymercuration–demercuration reaction of

1 -

methylcyclohexene gives

MEDIUM

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

0.436 g

of acetyl derivative of polyhydric alcohol

(mol . wt . = 92)

require

0.336 g KOH

for hydrolysis. Total no. of hydroxyl groups in alcohol are:

HARD

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Although oxirane (oxacyclopropane) and oxetane (oxacyclobutane) react with Grignard reagents and organolithiums to form alcohols, tetrahydrofuran (oxacyclopentane) is so unreactive that it is used as a solvent in the preparation of these reagents. Explain.

MEDIUM

Chemistry>Organic Chemistry>Alcohols, Phenols and Ethers>Preparation of Alcohols

Question Image , is