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Figure 8
Synthesis of 7: a) 4, K2CO3, DMF, 393 K under microwave irradiation (300 W), 2 h, 92%; b) BBr3, dry chloroform, 353 K, 24 h, 100%; c) ethylene glycol ditosylate, Cs2CO3, DMF, 393 K under microwave irradiation (300 W), 1.5 h, 90%. |
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