Journal
ADVANCED SYNTHESIS & CATALYSIS
Volume 361, Issue 15, Pages 3554-3559Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adsc.201900279
Keywords
Amidation; alpha-Keto amides; Photooxidative coupling; Rose Bengal; Visible light
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Funding
- MHRD
- UGC
- Science and Engineering Research Board (SERB), Govt. of India [SER-892-CMD]
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Photocatalytic amidation of alpha-keto aldehydes is herein investigated. This transformation was achieved using rose bengal as photocatalyst at room temperature under ambient air and under irradiation of a 20W white LED bulb. The method is mild, efficient and environmentally benign. This photocatalytic method is compatible with different unsubstituted and substituted alpha-keto aldehydes having electron-withdrawing or -donating groups, secondary amines, cyclic or acyclic, and primary aliphatic amines. Mechanistic studies reveal that the reaction proceeds via oxidative quenching of the photocatalyst.
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