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Updated: Jun 3, 2026

Light-driven Enzymatic Decarboxylation
Published on: May 22, 2016
Visible-Light-Mediated Dual Activation of Amino Acids for α-Selective Deaminative Esterification
Sk Abdur Rahaman1,2, Subhodeep Das1, Subhamoy Chakraborty1,2
1Organic and Medicinal Chemistry Division, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India.
None:
The nature-mimetic valorization of renewable biomass into value-added chemicals is a cornerstone to achieve a circular chemical economy. Here, an organophotoredox-catalyzed regioselective deaminative esterification of amino acids at the α-position under visible-light irradiation at room temperature is disclosed. The amino acid-derived Katritzky salt undergoes a homolytic cleavage to generate an alkyl radical, which combines with the carboxyl radical generated from an aromatic/aliphatic/amino acid through a single-electron oxidation of the corresponding cesium carboxylate, furnishing the α-ester product in high yields. Intriguingly, an EDA complex with the electron-deficient pyridinium salt and NaI is formed in situ to forge C-O bonds.
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