Chemistry · Organic Reactions and Synthesis
The correct sequence of reagents to effect the Birch reduction and subsequent transformations of a substituted benzene ring is:
- 1i. Na/liq. NH 3 , EtOH; ii. CHCl 3 , NaOH; iii. Na/liq. NH 3 ; iv. DDQ
- 2i. Na/liq. NH 3 , EtOH; ii. DDQ; iii. CHCl 3 , NaOH; iv. Na/liq. NH 3✓
- 3i. DDQ; ii. Na/liq. NH 3 , EtOH; iii. CHCl 3 , NaOH; iv. Na/liq. NH 3
- 4i. CHCl 3 , NaOH; ii. Na/liq. NH 3 ; iii. DDQ; iv. Na/liq. NH 3 , EtOH
Correct answer
i. Na/liq. NH 3 , EtOH; ii. DDQ; iii. CHCl 3 , NaOH; iv. Na/liq. NH 3
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