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Updated: Apr 18, 2026

Light-driven Enzymatic Decarboxylation
Published on: May 22, 2016
The gold(i)-catalysed protodecarboxylation mechanism.
Stéphanie Dupuy1, Luke Crawford, Michael Bühl
1EastCHEM, School of Chemistry, University of St. Andrews, North Haugh, St. Andrews, Fife, KY16 9ST (UK).
This study details the gold-catalyzed protodecarboxylation mechanism. Researchers found that protodeauration can compete with decarboxylation, a switch influenced by pKa.
Area of Science:
- Organometallic Chemistry
- Reaction Mechanism Elucidation
Background:
- Gold catalysis is crucial in organic synthesis.
- Understanding reaction pathways is key to optimizing chemical processes.
Purpose of the Study:
- To investigate the mechanism of gold-catalyzed protodecarboxylation.
- To identify factors influencing the reaction pathway and rate-limiting steps.
Main Methods:
- Experimental kinetic studies to determine activation parameters.
- Computational Density Functional Theory (DFT) calculations.
- Investigation of arylgold intermediate hydrolysis.
Main Results:
- Detailed mechanistic insights into gold-catalyzed protodecarboxylation.
- Quantification of activation parameters for the decarboxylation step.
- Identification of protodeauration as a competitive pathway at high conversions, dependent on pKa.
Conclusions:
- The study provides a comprehensive understanding of the gold-catalyzed protodecarboxylation mechanism.
- The interplay between decarboxylation and protodeauration is pH-dependent.
- DFT calculations and experimental data offer valuable mechanistic details.
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