医药拉帕替尼中间体;药物化学与有机合成中间体,是具有抗真菌活性化合物喹唑啉二硒化合物的合成中间体;结构中的氯原子可以被亲核试剂例如有机胺,醇类化合物进攻得到脱氯官能团化的产物;碘单元可以很容易地进行偶联反应和相应的取代反应进行应用转化。
医药;有机合成
路线1:Vilsmeier试剂法
- 步骤:在氮气下向搅拌的无水二甲基甲酰胺(DMF)(3.20ml)在1,2-二氯乙烷(DCE)(10ml)中的溶液中,在冰水浴中冷却,滴加草酰氯溶液(5.2ml,60毫摩尔,在DCE(25毫升)中)。添加结束后,除去冷浴,将反应混合物在室温下搅拌5分钟。在氮气流下分批加入6-碘-喹唑啉-4-醇(5.0g,18mmol),并将混合物立即加热至回流。继续加热4.5小时,然后冷却至室温。将反应混合物倒入过量的冰水混合物(约300ml)中并用DCM(约500ml)萃取。用DCM(2×50ml)进一步萃取水层。将合并的有机萃取液干燥(Na2SO4)并减压浓缩,得到所需产物。
- 条件:Vilsmeier试剂;1,2-二氯乙烷;回流4.5小时
- 收率:99%
- 参考文献:[1] Patent: US2005/101617, 2005, A1. Location in patent: Page/Page column 6 [2] Patent: WO2011/2523, 2011, A1. Location in patent: Page/Page column 43 [3] Patent: KR2017/15848, 2017, A. Location in patent: Paragraph 0067; 0071; 0072 [4] Patent: CN106317026, 2017, A. Location in patent: Paragraph 0075; 0076; 0077; 0078 [5] Patent: CN103772411, 2016, B. Location in patent: Paragraph 0017; 0027; 0028 [6] Patent: US2008/51422, 2008, A1. Location in patent: Page/Page column 13-14 [7] Bioorganic and Medicinal Chemistry Letters, 2009, vol. 19, # 19, p. 5531 - 5538 [8] Patent: EP2744501, 2016, B1. Location in patent: Paragraph 0156; 0157 [9] Patent: EP2090575, 2009, A1. Location in patent: Page/Page column 61 [10] Organic Process Research and Development, 2005, vol. 9, # 4, p. 440 - 450 [11] Patent: US2006/281772, 2006, A1. Location in patent: Page/Page column 58-59 [12] Organic Process Research and Development, 2007, vol. 11, # 3, p. 406 - 413 [13] Bioorganic and Medicinal Chemistry, 2017, vol. 25, # 1, p. 27 - 37 [14] Chinese Chemical Letters, 2017, vol. 28, # 6, p. 1220 - 1227 [15] Patent: CN106986895, 2017, A. Location in patent: Paragraph 0012; 0113