Primary, secondary, and tertiary alkyl radicals formed by the photocatalyzed oxidation of organosilicates underwent efficient carbonylation with carbon monoxide (CO) to give a variety of unsymmetrical ketones. This study introduces the possibility of radical carbonylation under a photooxidative regime.
Alkyl radicals, from primary to tertiary, formed by photocatalyzed oxidation of organosilicates, are involved efficiently in radical carbonylation with carbon monoxide (CO), in the presence of various amines and CCl 4 , leading to a variety of amides in moderate to good yields. Scheme 4. Synthesis of N-phenyl-γ-butyrolactam 4 from 3-(phenylamino)propane silicate 1 k.
Primary, secondary and tertiary alkyl radicals, formed by photocatalyzed oxidation of organosilicates, can be involved efficiently in radical carbonylation with carbon monoxide (CO), which leads to a variety of unsymmetrical ketones. This work constitutes the first example of radical carbonylation under a photooxidative regime.
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