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Haloalkanes and Haloarenes

Short Answer Type

151. Write the nucleophilic reaction for the conversion of haloalkanes to primary amine.

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152. Write the nucleophilic reaction for the conversion of haloalkanes to thio ether.

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153. Write the nucleophilic reaction for the conversion of haloalkanes to nitro alkane.

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154. Write the nucleophilic reaction for the conversion of haloalkanes to alkyl nitrite.

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155. Write the nucleophilic reaction for the conversion of haloalkanes to alkanes.

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156. When a haloalkane reacts with AgNO₂ then nitroalkane is formed but the reaction of KNO₂ with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.

In AgNO₂ the nucleophile is NO₂^– group while in potassium nitrite (KNO₂) the nucleophile is O^–—N = O group. Therefore, these two reagents form two types of compounds with haloalkanes.

(i)

(ii)

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157. Give an example of elimination reaction shown by haloalkanes.

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158.

What is meant by dehydrohalogenation?

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159. What is Grignard reagent and is it prepared?

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160. Write the names of the main products obtained when Bromoethane is treated with an aqueous alkali.

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Previous Year Papers

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Test Yourself

Short Answer Type

156. When a haloalkane reacts with AgNO2 then nitroalkane is formed but the reaction of KNO2 with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.

156. When a haloalkane reacts with AgNO₂ then nitroalkane is formed but the reaction of KNO₂ with a haloalkane gives alkyl nitrite. Give reasons and write the two reactions.