Chapter 7, Problem 55P

Interpretation Introduction

Interpretation:

The explanation for not adding $\text{HOOH}\text{and}{\text{OH}}^{\text{-}}$ in the hydroboration-oxidation until after the hydroboration is over has to be given.

Concept Introduction:

Hydroboration-Oxidation Reaction:

The conversion of an alkene or alkyne into an alcohol can be done using hydroboration-oxidation reaction.  In simply we can say that it is the addition of a water molecule across the double bond.

The reaction is done in two steps.  First one is the hydroboration step using ${\text{BH}}_{\text{3}}$ and the second one is the oxidation step.

Addition of ${\text{H}}^{\text{+}}\text{and}{\text{OH}}^{-}$ will be a syn addition and the addition will be according to Anti-Markovnikov’s rule.

Anti-Markovnikov’s rule: In the addition of an electrophile to an alkene or alkyne, the negative part of the electrophile will bonded to the carbon atom having more number of hydrogen atoms.