化学合成;材料科学。
化学合成;材料科学
合成路线 1(1. 合成:10040-96-7)
产率:90%
合成条件:With copper(I) sulfide; N,N,N,N,-tetramethylethylenediamine In methanol at 20℃; for 24 h;
实验步骤:一般步骤:向10mL圆底烧瓶中装入磁力搅拌棒,苯并咪唑1(59mg,0.5mmol),硼酸2(1.0mmol),Cu 2 S(4mg,0.025mmol)和MeOH(2mL),然后 加入TMEDA(0.075mL,0.5mmol)。 用隔膜密封烧瓶,通过隔膜插入18-gauche针。 这种设置允许空气进入反应并避免混合物的污染。 将反应混合物在400至600rpm下搅拌适当的时间并用EtOAc(2×15mL)萃取。 用饱和的乙二胺四乙酸二钠盐水溶液(15mL)洗涤合并的有机层,然后用无水Na 2 SO 4干燥。 减压除去挥发物,并通过柱色谱(硅胶,己烷-EtOAc)纯化残余物,得到标题产物,其通过1 H NMR,13 C NMR,HRMS和熔点(如果是固体)表征。
参考文献:
- [1] Synthesis, 2008, # 5, p. 795 - 799 [2] Tetrahedron, 2018, vol. 74, # 5, p. 606 - 617 [3] Green Chemistry, 2018, vol. 20, # 21, p. 4891 - 4900 [4] Catalysis Communications, 2018, vol. 109, p. 38 - 42 [5] Tetrahedron, 2012, vol. 68, # 38, p. 7794 - 7798
合成路线 2(2. 合成:10040-96-7)
产率:90%
合成条件:With copper(l) iodide; caesium carbonate; dimethylbiguanide In N,N-dimethyl-formamide at 20 - 110℃; for 15.17 h;
实验步骤:一般步骤:向具有磁力搅拌棒的25mL烧瓶中加入CuI(9.6mg,0.05mmol),二甲双胍(0.1mmol),Cs 2 CO 3(652mg,2.0mmol),咪唑(1.0mmol),芳基卤(1.1)。 mmol)和DMF(5mL)。 将混合物在室温下搅拌10分钟,然后加热至110℃保持适当的时间(参见表2)。 通过TLC监测反应进程。反应完成后,将混合物用EtOAc(51mL)萃取,分离有机相并蒸发。 通过柱色谱进一步纯化,得到所需的偶联产物。
参考文献:
- [1] Synlett, 2012, vol. 23, # 8, p. 1240 - 1244 [2] Tetrahedron Letters, 2013, vol. 54, # 52, p. 7095 - 7099 [3] Journal of Organic Chemistry, 2007, vol. 72, # 8, p. 2737 - 2743 [4] Applied Catalysis A: General, 2016, vol. 513, p. 53 - 66 [5] Indian Journal of Chemistry - Section A Inorganic, Physical, Theoretical and Analytical Chemistry, 2018, vol. 57A, # 2, p. 181 - 185 [6] Applied Organometallic Chemistry, 2017, vol. 31, # 11, [7] Tetrahedron, 2017, vol. 73, # 16, p. 2191 - 2195 [8] Synlett, 2008, # 19, p. 3068 - 3072
合成路线 3(3. 合成:10040-96-7)
产率:94%
合成条件:With C 40 H 34 CuIN 6 O 6 ; sodium hydroxide In dimethyl sulfoxide at 100℃; for 4 h; Sealed tube
实验步骤:通用程序:对于催化反应,催化剂C1(12mg,0.01mmol),咪唑(1.0mmol),芳基卤(1.0mmol),NaOH(80mg,2.0mmol)和二甲基亚砜(DMSO,5mL)是 采取密封管。 将反应混合物在100℃下搅拌4小时,然后冷却至室温。 加入5mL H 2 O后,将溶液用乙酸乙酯萃取。 然后将有机层用无水Na 2 SO 4干燥,减压除去溶剂。最后通过硅胶柱色谱法得到N-芳基化产物。
参考文献:
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