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Q25.

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Organic Chemistry
Found in: Page 570

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Short Answer

Question: What reagents are needed to convert 1-ethylcyclohexene into (a) 1-bromo-2-ethylcyclohexane;

(b) 1-bromo-1-ethylcyclohexane; (c) 1,2-dibromo-1-ethylcyclohexane?

Answer

a. The reagent needed for the conversion of 1-ethylcyclohexene to 1-bromo-2-ethylcyclohexane is HBr and peroxide.

b. The reagent needed for the conversion of 1-ethylcyclohexene to 1-bromo-1-ethylcyclohexane is HBr.

c. The reagent needed for the conversion of 1-ethylcyclohexene to 1,2-dibromo-1-ethylcyclohexane is bromine.

See the step by step solution

Step by Step Solution

Step 1: Reaction of an alkene with HBr

The product formed comprises hydrogen linked to the carbon that is less substituted when the combination of an alkene with HBr happens in the absence of sunlight, heat, or peroxides.

Step 2: Reaction of an alkene with HBr and peroxide

The product formed comprises bromine linked to the carbon that is less substituted when the combination of an alkene with HBr happens in the presence of sunlight, heat, or peroxides.

Step 3: Reagent needed to convert 1-ethylcyclohexene into various products

a. The conversion of 1-ethylcyclohexene to 1-bromo-2-ethylcyclohexane can be done with the help of HBr and peroxide. The reaction can be given as:

Conversion of 1-ethylcyclohexene to 1-bromo-2-ethylcyclohexane

b. The conversion of 1-ethylcyclohexene to 1-bromo-1-ethylcyclohexane can occur with the help of HBr. The reaction can be given as:

Conversion of 1-ethylcyclohexene to 1-bromo-1-ethylcyclohexane

c. The conversion of 1-ethylcyclohexene to 1, 2-dibromo-1-ethylcyclohexane can occur in the presence of bromine as the reagent. The reaction can be given as:

Conversion of 1-ethylcyclohexene to 1,2-dibromo-1-ethylcyclohexane

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