化学合成,医药中间体。
医药中间体
合成路线 1(1. 合成:65185-58-2)
产率:85.2%
合成条件:Stage #1: With borane-THF In tetrahydrofuran at 0℃; for 24.50 h; Reflux Stage #2: for 4 h; Reflux
实验步骤:在0℃下30分钟向该2-溴苄基氰(20.0g,0.1mol)的THF(100mL)溶液中滴加1M BH 3·THF(200mL,0.2mol),然后加热回流24小时。 在0℃下用MeOH(50mL)和6M HCl(50mL)淬灭后,将反应混合物加热回流另外4小时并在减压下浓缩。将残余物用H 2 O(300mL)稀释并用EA(75)洗涤。毫升×2)。 然后用15%NaOH中和水层,用EA(75mL×2)萃取。 将合并的有机层用Na 2 SO 4干燥并减压浓缩,得到化合物2a,为黄色油状物(17.4g,85.2%)。 HRMScalcd C8H11NBr [M + H] + 200.0069,found200.0068。 1H NMR(500MHz,CDCl3)δ7.58(d,J = 8.0Hz,1H),7.35-7.31(m,2H),7.15(t,J = 7.0Hz,1H),2.79(m,4H),1.18 (m,2H)。 13 C NMR(125MHz,DMSO-d6)δ139.8,132.9,131.6,128.6,128.2,124.3,42.4,40.3。
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