This question is about the reaction scheme shown - AQA - A-Level Chemistry - Question 10 - 2022 - Paper 2
Question 10
This question is about the reaction scheme shown.
Step 1
(CH3)3C - NO2
Step 2
(CHEMICAL REACTION)
Step 3
CH3 - NH2
Amine A
Step 4
(CH3)3C - Cl
Step 5
(CHEMICAL... show full transcript
Worked Solution & Example Answer:This question is about the reaction scheme shown - AQA - A-Level Chemistry - Question 10 - 2022 - Paper 2
Step 1
step 1
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Answer
Reagents needed for step 1 include concentrated nitric acid (HNO3) and concentrated sulfuric acid (H2SO4) as catalysts.
Step 2
step 2
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In step 2, the products formed from the reaction will include Amine A (CH3-NH2).
Step 3
step 3
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The mechanism for the reaction in step 3 is nucleophilic addition-elimination.
Step 4
step 4
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The reagent for step 4 is chlorine (Cl2) and the necessary condition is exposure to UV light.
Step 5
step 5
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The yield of Amine B in step 5 is less than the yield of Amine A in step 2 because step 5 undergoes further substitution, which can produce multiple amine products.
Step 6
step 6
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Amine B is a stronger base than Amine A due to the electron-donating effects of the alkyl group in Amine B, which increases the availability of the lone pair of electrons on the nitrogen atom.
