[figure] The maximum number of RBr producing 2-methylbutane by above sequence of reactions is . (Consider the structural isomers only)
- 5
- 3
- 4
- 1
Answer
(3) 4
Solution
RBr Mg RMgBr H2O R-H: only Br is replaced by H, the skeleton stays. Br can sit on four different carbons of 2-methylbutane:
[figure]
∴ 4
Answer: (3)