Question:

Diborane on reaction with olefins forms :

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Diborane gives trialkyl borane in hydroboration of alkenes.
Updated On: Apr 15, 2026
  • mono acid derivatives
  • diethyl borane
  • triethyl borane
  • ethyl borane
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The Correct Option is C

Solution and Explanation

Concept: Hydroboration reaction: \[ B_2H_6 + 6RCH=CH_2 \rightarrow 2BR_3 \]

Step 1:
Reaction type.
Diborane adds across double bonds.

Step 2:
Product.
Forms trialkyl borane: \[ BR_3 \Rightarrow \text{triethyl borane} \]
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