Nitrosonium Tetrafluoroborate-Promoted α,α-Diacetoxylation of Aryl Methyl Ketones.

A clear trend of increasing yields, from 2g (37%) to 2h (43%) and 2c (75%), suggests an inverse correlation between the reaction efficiency and stability of the putative benzylic tertiary, secondary, and primary radicals; i.e. , substrates that more readily form benzylic radicals afford lower yields.

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