化学合成,苏沃雷生医药中间体。
医药
合成路线 1(1. 合成:956317-36-5)
产率:68%
合成条件:With copper(l) iodide; (1R,2R)-N,N-dimethylcyclohexane-1,2-diamine; caesium carbonate In N,N-dimethyl-formamide at 100℃; for 4 h;
实验步骤:1,2,3-三唑(3.45g,50mmol),2-碘-5-甲基苯甲酸(5.24g,20mmol),碳酸铯(11.72g,36mmol),反式-N,N'-二甲基-1在单个口中将2-环己烷二胺(0.51g,3.6mmol),碘化亚铜(0.38g,2mmol)和N,N-二甲基甲酰胺(30ml)依次加入到100ml圆底烧瓶中,得到的反应在氮气保护下将混合物逐渐加热至100℃,反应4小时。停止反应,冷却至室温进行反应,稀释水(150ml),并使用乙酸乙酯(200ml×2)萃取。除去有机层,水层用浓盐酸(质量分数为36.5%)酸化至pH至1-2,然后用乙酸乙酯(200ml×2)萃取,并与有机层合并,用无水硫酸钠干燥。过滤,减压浓缩滤液,通过硅胶柱色谱法(二氯甲烷/甲醇(v / v)= 50/1)纯化得到的残余物,得到标题化合物,为黄色固体(2.76g,68%)。
参考文献:
- [1] Patent: CN105461699, 2016, A. Location in patent: Paragraph 0239; 0240; 0241; 0242 [2] Patent: WO2017/12502, 2017, A1. Location in patent: Page/Page column 53 [3] Patent: CN106986859, 2017, A. Location in patent: Paragraph 0185; 0186 [4] Patent: CN105949203, 2016, A. Location in patent: Paragraph 0179; 0193; 0194 [5] Angewandte Chemie - International Edition, 2011, vol. 50, # 48, p. 11511 - 11515 [6] Chinese Chemical Letters, 2015, vol. 26, # 1, p. 103 - 107 [7] Journal of Medicinal Chemistry, 2015, vol. 58, # 14, p. 5620 - 5636 [8] Patent: US2008/132490, 2008, A1. Location in patent: Page/Page column 12-13 [9] Patent: WO2009/11775, 2009, A1. Location in patent: Page/Page column 31 [10] Patent: WO2015/55994, 2015, A1. Location in patent: Page/Page column 59 [11] Patent: US9441254, 2016, B2. Location in patent: Page/Page column 13; 14 [12] Patent: CN104649983, 2018, B. Location in patent: Paragraph 0037; 0038
合成路线 2(2. 合成:956317-36-5)
产率:68%
合成条件:With copper(l) iodide; (R,R)-N,N'-dimethyl-1,2-diaminocyclohexane; caesium carbonate In N,N-dimethyl-formamide at 100℃; for 4 h; Inert atmosphere
实验步骤:2H-1,2,3-三唑(3.45g,50mmol),2-碘-5-甲基苯甲酸(5.24g,20mmol)碳酸铯(11.72g,36mmol),反式-N,N'-二甲基 将-1,2-环己烷二胺(0.51g,3.6mmol)碘化亚铜(0.38g,2mmol),N,N-二甲基甲酰胺(30mL)依次加入到100mL单颈圆底烧瓶中,在保护下 氮气逐渐加热至100℃,反应4小时。反应,冷却,用自来水稀释,用乙酸乙酯(200ml×2)萃取。水层用浓盐酸酸化至pH = 1至2, 用乙酸乙酯(200mL×2)萃取。合并有机层,用无水硫酸钠干燥,过滤。减压蒸发滤液,用柱色谱纯化(二氯甲烷/甲醇(v / v)= 50/1) 得到标题化合物(黄色固体,2.76g,68%)。
参考文献:
- [1] Patent: CN106243052, 2016, A. Location in patent: Paragraph 0238; 0239; 0240; 0241; 0242 [2] Patent: WO2017/88759, 2017, A1. Location in patent: Paragraph 00182 [3] Patent: CN107759620, 2018, A. Location in patent: Paragraph 0183-0187 [4] Patent: WO2010/48014, 2010, A1. Location in patent: Page/Page column 33-34 [5] Patent: WO2010/48017, 2010, A1. Location in patent: Page/Page column 38 [6] Patent: WO2012/89606, 2012, A1. Location in patent: Page/Page column 46 [7] Patent: WO2012/148553, 2012, A1. Location in patent: Page/Page column 48-49 [8] Patent: US2015/232460, 2015, A1. Location in patent: Paragraph 0441-0444 [9] Patent: CN104557744, 2017, B. Location in patent: Paragraph 0011; 0032-0037; 0038; 0039; 0040-0041
合成路线 3(3. 合成:956317-36-5)
产率:91%
合成条件:at 100℃; for 12 h;
实验步骤:将化合物I加入到每升氢氧化钾溶液4摩尔中,将反应物在100℃下回流12小时。反应完成后,用稀盐酸将混合溶液的pH调节至4-5,并且 用二氯甲烷萃取保留有机相。用饱和盐水洗涤,用无水硫酸钠干燥,旋转,即5-甲基-2-(2H-1,2,3-三唑)苯甲酸(化合物II) 得到的转化率为100%,收率为91%。
参考文献:
- [1] European Journal of Organic Chemistry, 2018, vol. 2018, # 6, p. 723 - 729 [2] Patent: CN107674037, 2018, A. Location in patent: Paragraph 0021; 0023; 0025; 0027; 0029; 0031; 0033 [3] Organic Letters, 2018, vol. 20, # 16, p. 4994 - 4997 [4] Organic and Biomolecular Chemistry, 2013, vol. 11, # 45, p. 7830 - 7833 [5] Patent: WO2016/89721, 2016, A1. Location in patent: Page/Page column 45