15. Halogen compounds
A section of Chemistry, 9701
Listing 10 of 284 questions
Benzene reacts with D in the presence of a suitable catalyst to give cumene and non-organic productE. This is an electrophilic substitution reaction. + D + E catalyst cumene Name the reactant D and the non-organic product E. D E Give the name of the type of aromatic electrophilic substitution reaction taking place. Cumene undergoes substitution reactions with chlorine to give several different isomeric products with the formula C9H11Cl. The substitution can occur in the aromatic ring or in the side‑chain of cumene. Describe the conditions that are used to ensure substitution takes place only in the aromaticring. Draw the structures of the two major isomeric products of the reaction, formula C9H11Cl, when substitution takes place in the aromatic ring. Describe the conditions that are used to ensure substitution takes place only in the side‑chain. Draw the structures of two isomeric products of the reaction, formula C9H11Cl, when substitution takes place in the side‑chain. Complete the following table to show the structures of the organic products formed when cumene reacts with each reagent. reagent structure of organic product hot KMnO4H2 + Ni, high pressure Cumene can be nitrated using a mixture of concentrated nitric and sulfuric acids. The mechanism for this reaction is similar to the mechanism for the nitration of benzene. Complete the mechanism for this reaction. ● Include all relevant charges and curly arrows showing the movement of electron pairs. ● Draw the structure of the intermediate. ● You do not need to draw the products. cumene intermediate products
9701_s18_qp_41
THEORY
2018
Paper 4, Variant 1
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Benzene reacts with D in the presence of a suitable catalyst to give cumene and non-organic productE. This is an electrophilic substitution reaction. + D + E catalyst cumene Name the reactant D and the non-organic product E. D E Give the name of the type of aromatic electrophilic substitution reaction taking place. Cumene undergoes substitution reactions with chlorine to give several different isomeric products with the formula C9H11Cl. The substitution can occur in the aromatic ring or in the side‑chain of cumene. Describe the conditions that are used to ensure substitution takes place only in the aromaticring. Draw the structures of the two major isomeric products of the reaction, formula C9H11Cl, when substitution takes place in the aromatic ring. Describe the conditions that are used to ensure substitution takes place only in the side‑chain. Draw the structures of two isomeric products of the reaction, formula C9H11Cl, when substitution takes place in the side‑chain. Complete the following table to show the structures of the organic products formed when cumene reacts with each reagent. reagent structure of organic product hot KMnO4H2 + Ni, high pressure Cumene can be nitrated using a mixture of concentrated nitric and sulfuric acids. The mechanism for this reaction is similar to the mechanism for the nitration of benzene. Complete the mechanism for this reaction. ● Include all relevant charges and curly arrows showing the movement of electron pairs. ● Draw the structure of the intermediate. ● You do not need to draw the products. cumene intermediate products
9701_s18_qp_43
THEORY
2018
Paper 4, Variant 3
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Questions Discovered
284