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The microwave irradiation technique was applied to the Diels–Alder reaction of tetrakis(pentafluorophenyl)porphyrin with pentacene and naphthacene. Both reactions proceed within minutes to afford the corresponding monoadducts in 83% and 23% yield, respectively. When compared with the yields obtained under classical heating (22% and no reaction, respectively), this represents an impressive improvement...
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