Q.Write a short note on hydroboration.

Step 1. Hydroboration is the reaction in which diborane adds across the double or triple bond of an alkene or alkyne, carried out in an ether solvent at room temperature.

Step 2. The stoichiometry, for an alkene, is B₂H₆ + 6RCH=CHR → 2(RCH₂-CHR)₃B: each B-H bond across the diborane molecule adds across one alkene double bond, ultimately giving a trialkylborane product.

Step 3. Hydroboration is highly valued in synthetic organic chemistry specifically because it proceeds with anti-Markovnikov regiochemistry -- boron (and hence, after the standard oxidative work-up, the resulting -OH group) ends up on the LESS substituted carbon of the double bond, the opposite regiochemical outcome from ordinary acid-catalysed hydration. …

State the reaction (diborane + alkene/alkyne, ether, room temperature), give the stoichiometric equation, and explain why it is s …

• Omitting WHY hydroboration matters synthetically -- simply stating 'diborane adds to alkenes' without naming the anti-Markovnikov outcome misses the chapter's own sta …