Which sequence represents the best synthesis of 4-isopropylbenzonitrile? Please

Question

Which sequence represents the best synthesis of 4-isopropylbenzonitrile? Please please please explain!

a. 1. Benzene + (CH3)2CHCL, AlCl3

2. Br2, FeBr3

3. KCN

b. 1. Benzene + (CH3)2CHCl, AlCl3

2. HNO3, H2SO4

3. Fe, HCl

4. NaOH

5. NaNO2, HCl, H2O

6. CuCN

c. 1. Benzene + (CH3)2CHCl, AlCl3

2. HNO3, H2SO4

3. Fe, HCl

4. NaOH

5. KCN

d. 1. Benzene + HNO3, H2SO4

2. (CH3)2CHCl, AlCl3

3. Fe, HCl

4. NaOH

5. NaNO2, HCl, H2O

6. CuCN

e. 1. Benzene + HNO3, H2SO4

2. Fe, HCl

3. NaOH

4. NaNO2, HCl, H2O

5. CuCN

6. (CH3)2CHCl, AlCl3

Explanation / Answer

3. KCN 4. NaOH 3. Fe, HCl 6. CuCN 1. Benzene + HNO3, H2SO4

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