Fig. 4: Late-stage functionalization using this methodology. | Communications Chemistry

Fig. 4: Late-stage functionalization using this methodology.

From: Visible light mediated photocatalytic [2 + 2] cycloaddition/ring-opening rearomatization cascade of electron-deficient azaarenes and vinylarenes

Fig. 4

Reaction conditions: 0.1 mmol of 1a, 0.5 mmol of the corresponding styryl derivative, 0.5 equivalents of DBU and 1.0 mL of THF, under N2, 25 °C, 455 nm LED irradiation (22 W m−2) over 17 h. a Functionalization of Estrone derivative, b Functionalization of Tyrosine derivative, c Functionalization of Tocopherol derivative.

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