The major products from the following reaction sequence are product A and product B. [figure] The total sum of electrons in product A and product B are (nearest integer)
Answer
8
Solution
[figure]
[figure]
A: one –C≡C– (2 π bonds) ⇒ 4 π electrons
B: cyclohexa-1,3-diene, two C=C ⇒ 4 π electrons
∴ total = 4 + 4 = 8
Answer: 8