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. 2021 Mar 23;60(18):10155–10163. doi: 10.1002/anie.202016653

Scheme 1.

Scheme 1

2‐Cyclohexenone (1) as a model substrate to explore the photophysical properties of its Lewis acid complex 2 to boron trifluoride (Isomer 2′ with BF3 coordinated away from the double bond).