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Questions and Answers
What is required for the b-hydride elimination step in Hech coupling catalysis?
Why does the R group tend to eclipse the smallest group on the adjacent carbon during elimination?
What type of elimination process occurs in the b-hydride elimination step?
What is the predominant type of double bond formed in the product of the elimination?
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Which element acts as a catalyst in Hech coupling catalysis?
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Study Notes
Hech Coupling Catalysis
- In the β-hydride elimination step, the palladium and hydride must be coplanar for the reaction to occur, due to the syn elimination process.
- Steric reasons influence the elimination process, causing the R group to tend to eclipse the smallest group on the adjacent carbon.
- As a result, the elimination reaction primarily forms a trans double bond in the product.
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Description
This quiz covers the b-hydride elimination step in Heck coupling catalysis, a syn elimination process. It explores the steric reasons for the formation of a trans double bond in the product.
