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Reagents and conditions: (i) ethanol, NH2NH2·H2O; (ii) trimethoxy benzoyl chloride, pyridine, lower temp; (iii) P2S5, pyridine; (iv) AlCl3, benzene; (v) R–Br, anhydrous K2CO3, acetone; (vi) CrO2Cl2, pyridine, DCM; (vii) 2,4-dihydroxy aniline, EtOH, 3 h.
