Question

There are three common ways to convert an alkene into alcohol: (A) acid catalyzed hydration, (B) hydroboration-oxidation and (C) oxymercuration-demercuration. Which of the following statements about these reaction is incorrect?

• A. B results in the syn stereochemistry of -H and -OH groups, while A and C show no clear stereochemical preferenece.
• B. A and C gives Markownikoff's products, while B results in anti-Markownikoff's regioselectivity.
• C. Carbocation rearrangements are observed in A, but unrearranged products are obtained from B and C
• D. In all three reactions, water serves as nucleophile.

Answer 1

Answer: (D)

In all three reactions, water serves as nucleophile.

In hydroboration reaction, the nucleophile is hydride (H−)(H−) ion.so option D is not correct.