整形与ipso:选择性Pd和norbornene催化C-H氨基化使用烯化物
1Department of Chemistry, University of Texas at Austin , Austin, Texas 78712, United States.
Journal of the American Chemical Society
|November 22, 2013
概括
一个新的催化反应使得使用C-H功能化实现了正形氨化. 这种方法有效地将烯化物转化为有价值的氨基产物,具有高产量和功能组耐受性.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- C-H 功能化功能化
背景情况:
- 基的直接C-H氨基化是有机合成中的关键转化.
- 传统方法通常需要预先功能化的基板或恶劣的条件.
- 卡泰拉尼反应为C-H功能化提供了一条途径,但区域选择性可能是一个挑战.
研究的目的:
- 开发一种新型的催化方法,用于整形氨化.
- 为了在化的正正位置上实现选择性C-H功能化.
- 建立一个强大而高效的协议,具有广泛的基板范围和功能组容忍度.
主要方法:
- 使用了 (Pd) 和诺波伦纳催化系统.
- 作为基质使用的烯化物.
- 使用N-基胺作为氨基源和异醇作为Catellani型C-H功能化的减少剂.
主要成果:
- 实现了高效率的正态氨基化,提供50-99%的产量产品.
- 证明了卓越的功能组耐受性,允许各种基板应用.
- 呈现出补充性位点选择性,有利于基化物基化物基化物的正位功能化而不是位功能化.
结论:
- 报告的Pd/norbornene催化反应通过Catellani类型的C-H功能化提供了通过ortho-areneamination的有效途径.
- 这种方法为合成具有高选择性和产量的正基氨基提供了有价值的替代方案.
- 开发的协议扩大了复杂分子合成中C-H功能化的合成实用性.
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