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Cycloaddition of isobutyl or 2-ethylhexyl acrylate to perylene [143]. Reagents and conditions: (a) for R = i-Bu: p-chloranil, p-hydroxyanisole, rfx (132 °C), 6 d, Y = 39% and (b) for R = 2-ethylhexyl: p-chloranil, p-hydroxyanisole, rfx (215 °C), overnight, Y = 41%.
