反应详情

253A was prepared from 4-methoxybenzaldehyde and tert-butyl 3-aminobenzoate following the procedure as described in 4A. HPLC: Rt=3.82 min. (PHENOMENEX® Luna C18 4.6×30 mm 3 u, A10-90% aqueous methanol containing 0.1% TFA in 2 min; 4 mL/min flow). MS (ES): m/z=314.0 [M+H]+.