使用PyrDipSi对的双重C-H氧化:一个通用和高效的无痕/可修改的绑定定定向组
Anton V Gulevich1, Ferdinand S Melkonyan, Dhruba Sarkar
1Department of Chemistry, University of Illinois at Chicago, Chicago, Illinois 60607-7061, United States.
Journal of the American Chemical Society
|March 15, 2012
概括
一个新的指导小组使催化C-H氧化的有效氧化成为可能,在一个步骤中创建Resorcinol衍生物. 这种方法为合成复杂的有机分子提供了一种优越和多用途的方法.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 合成方法论 合成方法论
背景情况:
- 催化C-H功能化是有机合成中的一个强大的工具.
- 引导组对于控制C-H激活反应中的区域选择性至关重要.
- 对于各种应用来说,高效合成复醇衍生物是很重要的.
研究的目的:
- 开发一个新的指导小组,以有效的催化C-H氧化.
- 为了实现对Resorcinol衍生物的正交保护群的顺序,单一的引入.
- 展示新的指导小组对现有方法的优势.
主要方法:
- 2-pyrimidyldiisopropylsilyl (PyrDipSi) 指导小组的开发和应用.
- 催化了的C-H氧化反应.
- 一种酸盐 (OAc) 和酸盐 (OPiv) 组的单电位序列引入.
- 与2-pyridyldiisopropylsilyl (PyDipSi) 指导组进行比较.
主要成果:
- 该PyrDipSi指导组能够有效地Pd催化二重C-H氧化以形成Resorcinols.
- 正交保护的复醇衍生物是以单一的,顺序的方式合成的.
- 与PyDipSi组相比,PyDipSi组显示出更好的效率,特别是对正位置换的的单氧化,与PyDipSi组相比.
- 该PyrDipSi组很容易安装,移除和修改.
结论:
- 该PyrDipSi指导小组代表了Pd催化C-H氧化中的重大进步.
- 这种方法提供了一条通用而高效的途径,以获得多种不同的复醇衍生物.
- 易于安装和拆卸的PyrDipSi组增强了其在合成中的实际实用性.
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