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Synthesis of various 1-substituted triclosan derivatives. a) KOH, DMSO, 100 °C; b) H2, Ra-Ni, EtOH; c) t-BuONO, BF3 Et2O, THF, 0 °C ; d) NaI, acetone; e) CuCN, DMF, 150 °C; f) NaOH, H2O2, EtOH, 50 °C; g) 6 N HCl(aq), 2-methoxyethanol, 80 °C.
