1,2,3-Triazole amine as directing group in promoting catalytic oxidative C–H olefination under aerobic conditions

A practical ortho C–H olefination of phenyl acetic acid derivatives was achieved with a 1,2,3-triazole auxiliary directing group. Good to excellent yields were achieved with O2 as terminal oxidant. Other bidentate directing groups, such as 8-aminoquinoline, gave poor reactivity under this aerobic condition, highlighting the unique reactivity of triazole in promoting C–H activation.

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