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Reagents and conditions: a) t-BuONa, BnOH, dry DMF, 90 °C, 3 h, 72%; b) 3-carbamoylphenylboronic acid, K2CO3, Pd(OAc)2, EGME/H2O (3:1), 60 °C, 20 min, 70%; c) 10% Pd/C, cyclohexene, dioxane, 80 °C, 2 h, 100%; d) c-C6H11NCO, CuCl, DMF, rt, 30 min, 29%.
