Alkyne Hydroboration Oxidation Reaction and Mechanism

https://Leah4sci.com/Alkyne presents: Alkyne Hydroboration Oxidation: Reaction and Step-by-Step Mechanism using BH3, B2H6, Sia2BH or 9-BBN

📺Watch Next: Chain Elongation - Terminal Alkynes    • Chain Elongation via Alkylation of Te...  

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This video shows you the reaction and mechanism for the hydroboration oxidation of alkynes, in which an alkyne reacts with a boron-containing reagent, followed by NaOH and H2O2, to form either an aldehyde or ketone product at the less substituted, anti-Markovnikov position.

You’ll learn the step-by-step alkyne hydroboration oxidation mechanism, including Keto Enol Tautomerization to isomerize an unstable enol intermediate in a basic environment.
Finally you’ll learn about the regioselectivity of the reaction and compare the products when starting with terminal, symmetric or asymmetric internal alkynes.

↪ Links & Resources Mentioned In This Video ↩
▸Alkyne Reaction Series + Cheat Sheet https://Leah4sci.com/alkyne

▸Alkene Hydroboration Oxidation    • Hydroboration Oxidation of Alkenes Re...  
▸Alkene Reaction Shortcuts    • Alkene Reaction Shortcuts and Product...  
▸Alkene Reaction Series + Cheat Sheet https://Leah4sci.com/alkene
▸Keto Enol Tautomerization https://Leah4sci.com/KET
▸Markovnikov’s Rule https://Leah4sci.com/markovnikov

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⏱ In this video:
[0:19] Overview of Alkyne Hydroboration
[0:58] Review of Alkene Hydroboration
[2:31] Boron Reagents
[4:44] Mechanism for Alkyne Hydroboration
[9:50] Regioselectivity

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