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Reagents and conditions: (i) NaOH, EtOH, H20, 80 °C; (ii) MeNH2.HCl, EDCI, pyridine, 15 °C; (iii) BBr3, DCM, 0 to 25 °C, N2; (iv) Formaldehyde, amine, AcOH, THF, microwave, 75 or 80 °C, or formaldehyde, amine, dioxane/water, 50 °C, or formaldehyde, amine, DIPEA, EtOH, H20, 80 °C/Reflux or microwave, 120 °C.
