Scheme 3.
Cycloaddition of N-ethylmaleimide to the perylene bay region [141]. Reagents and conditions: (a) p-chloranil, p-hydroxyanisole, rfx (oil bath at 240 °C), 6 h, Y = 50%.
Cycloaddition of N-ethylmaleimide to the perylene bay region [141]. Reagents and conditions: (a) p-chloranil, p-hydroxyanisole, rfx (oil bath at 240 °C), 6 h, Y = 50%.