Question

80 Consider the following sequence of reactions and identify the unknown reagents (A) and (B) respectively. CH3-CH2-CH2 (A) -> P (B) -> CH3-CH-CH3 | | Br Br (Major) 1. (A) : Dil. aq NaOH at 20°C (B) : HBr, CH3COOH 2. (A) : Dil. aq NaOH at 20°C (B) : Br2, CHCl3 3. (A) : Alc. NaOH at 80°C (B) : HBr, CH3COOH 4. (A) : Alc. NaOH at 80°C (B) : Br2, CHCl3

          80 Consider the following sequence of reactions and identify the unknown reagents (A) and (B) respectively.

CH3-CH2-CH2 (A) -> P (B) -> CH3-CH-CH3
           |                           |
           Br                          Br
                                    (Major)

1. (A) : Dil. aq NaOH at 20°C
   (B) : HBr, CH3COOH
2. (A) : Dil. aq NaOH at 20°C
   (B) : Br2, CHCl3
3. (A) : Alc. NaOH at 80°C
   (B) : HBr, CH3COOH
4. (A) : Alc. NaOH at 80°C
   (B) : Br2, CHCl3