Easy and Economic Decarboxylative Oxygenation of Aliphatic Carboxylic Acids Catalyzed via Manganese (II) Acetate Under Visible Light‐Induced Homolysis

Metallophotoredox catalysis is very useful in transforming the chemical moieties for readily available diverse scaffolds. This study presents an efficient and concise methodology devised for decarboxylative oxidation of aliphatic carboxylic acid through manganese (II) acetate‐catalyzed visible blue light‐induced homolysis. The control experiments showed the presence of peroxide radical along with singlet oxygen suggesting the radical pathway. The light on/off experiment proved that continuous irradiation of light is essential for efficient photocatalytic decarboxylative oxygenation reaction. The established protocol is applicable for both primary and secondary carboxylic acids to afford aldehydes and ketones, respectively, in good yields.