Passage VII, #47
In explanation, correct me if I'm wrong, Choice C represents the carbocation leading to 1,2 addition and Choice D represents the carbocation leading to 1,4 addition. In the passage material on p.275, it says "As a general rule, 1,4 addition is favored at higher temperatures, because the more stable product is formed. At lower temperatures, the more stable intermediate dictates the product, so 1,2 addition is favored." So, shouldn't Choice C, leading to 1,2 addition be a more stable carbocation than Choice D? Choice C is secondary and Choice D is tertiary, which is opposite what I expected it to be.
In explanation, correct me if I'm wrong, Choice C represents the carbocation leading to 1,2 addition and Choice D represents the carbocation leading to 1,4 addition. In the passage material on p.275, it says "As a general rule, 1,4 addition is favored at higher temperatures, because the more stable product is formed. At lower temperatures, the more stable intermediate dictates the product, so 1,2 addition is favored." So, shouldn't Choice C, leading to 1,2 addition be a more stable carbocation than Choice D? Choice C is secondary and Choice D is tertiary, which is opposite what I expected it to be.
Last edited:
