化学合成。
化学合成
合成路线 1(1. 合成:2314-37-6)
产率:85%
合成条件:With N-iodo-succinimide; bis(trifluoromethanesulfonyl)imidategold(I) In 1,2-dichloro-ethane; toluene at 85℃; for 14 h;
实验步骤:一般步骤:向搅拌的底物(1mmol)的CH 2 Cl 2或(CH 2 Cl)2(0.1M)溶液中加入Ph3PAuNTf2(0.025mmol,19mg;络合物Ph3PAuNTf2甲苯,2:1),然后加入N-碘代琥珀酰亚胺(1.1)。 mmol,248mg)。 将所得溶液在室温下搅拌。 或在回流下直至原料完全转化。 在减压下除去溶剂后,通过快速柱色谱法使用不同梯度的己烷和EtOAc纯化粗物质,得到纯的所需产物。
参考文献:
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合成路线 2(2. 合成:2314-37-6)
产率:71%
合成条件:With iodic acid In N,N-dimethyl-formamide at 60℃; for 2 h; Inert atmosphere
实验步骤:通用方法:向对溴苄醇I-1(187mg,1.0mmol)的DMF(2.0mL)溶液中加入HIO 3(194mg,1.1mmol)。 将混合物在Ar气氛下在60℃下搅拌2小时。 反应后,将反应混合物倒入Na 2 S 2 O 3水溶液中,并用Et 2 O:己烷= 1:1(3×10mL)的混合物萃取。 将有机层用Na 2 SO 4干燥。 过滤并减压除去溶剂后,残余物通过硅胶快速短柱色谱法(EtOAc-己烷,1:4)纯化,得到对溴苯甲醛II-1,收率95%。
参考文献:
- [1] Tetrahedron, 2016, vol. 72, # 44, p. 6948 - 6954 [2] Patent: JP2018/2680, 2018, A. Location in patent: Paragraph 0032-0035