化学合成。
化学合成
合成路线 1(1. 合成:5355-17-9)
产率:80%
合成条件:With hydrogenchloride; nitromethane In water at 30℃; for 5 h; Inert atmosphere
实验步骤:在氮气流下,向装有温度计,三通旋塞和搅拌棒的100mL三颈烧瓶中加入3.96g(0.03mol)4-羟基苄醇(由Tokyo Chemical Industry Co.,Ltd制造) 。),加入21g甲醇(由Nacalai Tesque,Inc。制造),两滴硝基甲烷(由Nacalai Tesque,Inc。制造)。在室温下搅拌的同时,滴加0.2g盐酸(Nacalai Tesque,Inc。制造),然后在30℃下搅拌5小时。反应结束时HPLC的面积百分比为95%。加入0.28g吡啶(Nacalai Tesque,Inc。制造)和8g甲苯(Nacalai Tesque,Inc。制造)并中和,减压浓缩甲醇,加入31g甲苯和6g水。萃取并用5g水洗涤有机层。将得到的有机层浓缩,冷却至10℃或更低,过滤沉淀的晶体并干燥,得到3.53g(产率:80%)无色4-甲氧基甲基苯酚。 HPLC纯度为99%(不包括溶剂甲苯)。
参考文献:
- [1] Journal of Chemical Research - Part S, 2000, # 6, p. 266 - 268 [2] Journal of Chemical Research - Part S, 2000, # 6, p. 266 - 268 [3] Chemical and pharmaceutical bulletin, 2002, vol. 50, # 3, p. 380 - 383 [4] Patent: JP5747348, 2015, B2. Location in patent: Paragraph 0058-0062; 0066-0070 [5] Journal of Organic Chemistry, 1988, vol. 53, # 18, p. 4263 - 4273 [6] Recueil des Travaux Chimiques des Pays-Bas, 1955, vol. 74, p. 1448,1452 [7] Helvetica Chimica Acta, 1977, vol. 60, p. 1304 - 1311 [8] Tetrahedron Letters, 1987, vol. 28, # 45, p. 5551 - 5554 [9] Molecular Crystals and Liquid Crystals (1969-1991), 1985, vol. 130, p. 231 - 248 [10] Molecular crystals and liquid crystals, 1984, vol. 112, # 3-4, p. 319 - 324 [11] Organic Process Research and Development, 2005, vol. 9, # 1, p. 62 - 69