In the synthesis of glycerol from propene, the steps involved are `:`

Options

A. Allyl chloride, gamma allyl alcohol and `beta-` monochlorohydrin
B. Glycerol trichloride and glycerol `alpha-` chlorohydrin
C. Allyl alcohol and `alpha-` chlorohydrin
D. Allyl alcohol and monosodium glycerolate

Answer

To synthesize glycerol from propene, we follow a series of chemical reactions. Here are the steps involved:

### Step 1: Chlorination of Propene
- **Starting Material**: Propene (C3H6)
- **Reaction**: Propene is treated with chlorine (Cl2) at high temperatures.
- **Product**: This reaction produces allyl chloride (C3H5Cl).

### Step 2: Nucleophilic Substitution
- **Starting Material**: Allyl chloride (C3H5Cl)
- **Reaction**: Allyl chloride is treated with aqueous sodium hydroxide (NaOH).
- **Mechanism**: A nucleophilic substitution reaction occurs, where the hydroxide ion (OH-) attacks the carbon bonded to the chlorine, resulting in the formation of gamma allyl alcohol (C3H6O).

### Step 3: Addition of HOCl
- **Starting Material**: Gamma allyl alcohol (C3H6O)
- **Reaction**: Gamma allyl alcohol is treated with hypochlorous acid (HOCl).
- **Mechanism**: HOCl adds across the double bond of gamma allyl alcohol, leading to the formation of beta monochlorohydrin (C3H7ClO).

### Step 4: Hydrolysis
- **Starting Material**: Beta monochlorohydrin (C3H7ClO)
- **Reaction**: Beta monochlorohydrin undergoes hydrolysis in the presence of aqueous sodium hydroxide (NaOH).
- **Product**: This reaction yields glycerol (C3H8O3).

### Summary of Intermediates
The intermediates formed during the synthesis of glycerol from propene are:
1. Allyl chloride
2. Gamma allyl alcohol
3. Beta monochlorohydrin

Thus, the correct sequence of reactions leading to the synthesis of glycerol from propene involves the formation of these intermediates.

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