Methods of Preparation of Alcohols
Methods of Preparation of Alcohols: Overview
This topic covers concepts such as Methods of Preparation of Alcohols, Preparation of Alcohols By Acid Catalysed Hydration of Alkenes, Mechanism of Acid Catalysed Hydration of Alkenes, etc.
Important Questions on Methods of Preparation of Alcohols
Match the conversions with the reagents that are used in the process:
i. | Phenol to benzoquinone | a. | H2O/H+ |
ii. | Propanone to 2-methylpropan-2-ol | b. | Na2Cr2O7/H2SO4 |
iii. | Propene to propan-2-ol | c. | CH3MgBr/H2O |

An organic compound A on reduction forms compound B . B reacts with HBr to form the compound C. C with Mg forms Grignard reagent D which reacts with A to form a product which on hydrolysis gives E. Identify A to E.

In the following sequence of reactions,
The compound D is –

State the reaction between phenyl benzoate and sodium-ethanol.

Convert ethyl ethanoate into ethanol.

Explain 'Bouveault-Blanc reduction'.

The reduction of ester with is known as the ‘Bouveault-Blanc reduction’.

Which of the following reaction is called as 'Bouveault-Blanc reduction'

Which of the following compound gives -Ethylpentan--ol by the action of ethyl magnesium iodide followed by acid hydrolysis?

Which of the following alcohols cannot be prepared by reduction of carbonyl compounds?


In the conversion of starch into alcohol, the following enzymes are used:

Propene on oxidation with diborane in presence of alkaline hydrogen peroxide gives _______.

The major products and in the following reaction sequence, are

Five isomeric p-substituted aromatic compound (A) to (E) with molecular formula C8H8O2 are given for identification. Based on the following observation, give the structures of the compounds.
i. Both (A) and (B) form a silver mirror with Tollen's reagent. (B) also gives a positive test with neutral FeCl3 solution.
ii. (C) gives positive iodoform test.
iii. (D) is readily extracted in aqueous NaHCO3 solution.
iv. (E) on acid hydrolysis gives 1, 4-dihydroxybenzene.
Compound (E) is :

Which of the following are used to convert into?

The reduction of acetone by gives:

Through which of the following reactions number of carbon atoms can be increased in the chain?

Using Grignard reagent, suggest synthesis of following alcohol from aldehydes or ketones. Whenever possible, suggest more than one combination.

Using Grignard reagent, suggest synthesis of following alcohol from aldehydes or ketones. Whenever possible, suggest more than one combination.
