Scheme 36. Synthesis of a Coil-Shaped Dioxaperylenoid Polymer.
Reagents and conditions: (a)64 K2CO3, diphenyl sulfone, 210 °C, 5 h; (b) (1) H2SO4, 160 °C, 6 h, (2) tetrabutylammonium iodide, 120 °C, 6 h.
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