化学合成。
化学合成
合成路线 1(1. 合成:207115-22-8)
产率:68%
合成条件:With tetra-N-butylammonium tribromide In methanol; dichloromethane at 20℃; for 2 h;
实验步骤:4-溴-2-碘苯酚(4)。 将2-碘苯酚(11g,50mmol)溶于DCM(200mL)和MeOH(100mL)中。 然后在10分钟内分批加入四丁基三溴化铵(TBATB)(25.31g,52.5mmol)。 将溶液在室温下搅拌2小时,然后用1N HCl(200mL)淬灭。 萃取DCM层,水层用DCM再萃取两次。 然后合并有机层,用盐水洗涤,干燥并浓缩。 用快速色谱法(二氧化硅,50%-100%DCM /己烷)纯化残余物,得到4-溴-2-碘苯酚(10.2g,68%)。
参考文献:
- [1] Tetrahedron, 2015, vol. 71, # 35, p. 5946 - 5951 [2] Journal of Organic Chemistry, 2013, vol. 78, # 17, p. 8680 - 8688 [3] Organic Letters, 2015, vol. 17, # 22, p. 5666 - 5669 [4] Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1931, vol. 192, p. 1037 [5] Canadian Journal of Chemistry, 1965, vol. 43, p. 650 - 658
合成路线 2(2. 合成:207115-22-8)
产率:90%
合成条件:With N-iodo-succinimide; sulfuric acid In acetic acid at 22℃;
实验步骤:将4-溴苯酚(51.9g,0.30mol)和N-碘代琥珀酰亚胺(67.5g,0.30mol)在乙酸(360ML)中混合。将混合物短暂搅拌,用浓硫酸(5ML,0.09mol)处理。 在约22℃下搅拌过夜。在搅拌下将混合物倒入水(约800ML)中以沉淀产物。将悬浮液搅拌约1小时并过滤。湿滤饼用水洗涤(50ML,2) *)并在约50℃下减压干燥(80.9g,90%)。 MS-DEI(M + H)+ m / z,298; 1 H NMR(CDCl 3在400MHz)δ5.28(s,1H),6.86(d,1H),7.33(dd,1H),7.75(d,1H); 13 C NMR(CDCl 3在100MHz下)δ86.0,112.8,116.0,132.7,139.4,153.7。
参考文献:
- [1] Journal of Organic Chemistry, 2015, vol. 80, # 21, p. 10634 - 10642 [2] Journal of the Brazilian Chemical Society, 2010, vol. 21, # 1, p. 3 - 6 [3] Patent: US2004/54185, 2004, A1. Location in patent: Page 10 [4] Journal of Medicinal Chemistry, 2005, vol. 48, # 1, p. 38 - 55 [5] Tetrahedron Letters, 2007, vol. 48, # 1, p. 81 - 83 [6] Synthetic Communications, 2010, vol. 40, # 23, p. 3506 - 3513 [7] Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry, 2011, vol. 41, # 3, p. 258 - 261 [8] Synthetic Communications, 2008, vol. 38, # 17, p. 2881 - 2888 [9] Patent: US2012/184531, 2012, A1. Location in patent: Page/Page column 53 [10] Tetrahedron, 2008, vol. 64, # 37, p. 8992 - 8996 [11] Journal of Medicinal Chemistry, 2008, vol. 51, # 18, p. 5650 - 5662 [12] Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry, 2016, vol. 46, # 6, p. 832 - 837 [13] Journal of the American Chemical Society, 2014, vol. 136, # 12, p. 4740 - 4745 [14] Tetrahedron Letters, 2010, vol. 51, # 16, p. 2170 - 2173 [15] Indian Journal of Chemistry, Section A: Inorganic, Physical, Theoretical & Analytical, 1981, vol. 20, # 2, p. 133 - 135 [16] Bioorganic and Medicinal Chemistry Letters, 2005, vol. 15, # 10, p. 2559 - 2563 [17] Tetrahedron Letters, 2007, vol. 48, # 35, p. 6124 - 6128 [18] Synthetic Communications, 2008, vol. 38, # 22, p. 3894 - 3902 [19] Patent: WO2005/100301, 2005, A1. Location in patent: Page/Page column 61 [20] Patent: WO2010/92043, 2010, A1. Location in patent: Page/Page column 140
合成路线 3(3. 合成:207115-22-8)
产率:1.1 g
合成条件:Stage #1: With hydrogenchloride; sodium nitrite In water at 0℃; for 0.50 h; Stage #2: With potassium iodide In water at 0 - 20℃;
实验步骤:向2-氨基-4-溴苯酚(2g,8.9mmol,1.0当量)在HCl(5M,12.5mE,7.0当量)中的溶液中滴加亚硝酸钠(0.62g,8.9mmol, 在0℃下在水(5mE)中搅拌1.0当量。将混合物在该温度下搅拌30分钟,在00℃下缓慢加入冷却的KI溶液(1.5g,8.9mmol,1.0当量)的H 2 O(14mE)溶液。 然后将混合物温热至室温并搅拌过夜。 将反应混合物用乙酸乙酯(200mE)稀释,分离的水相用乙酸乙酯(100mEx3)萃取。 将合并的有机部分用Na 2 S 2 O 3(10%,40mE),水(100mEx 2)和盐水(40mE)洗涤,用Na 2 SO 4干燥并浓缩至干燥。通过快速硅胶色谱法(乙酸乙酯/乙酸乙酯)纯化残余物。 己烷)得到1.1g 4-溴-2-碘 - 苯酚,为黄色固体。
参考文献:
- [1] Patent: US2015/368278, 2015, A1. Location in patent: Paragraph 1218; 1219