通过从水中转移氧原子的高选择性电化学贝耶-维利格氧化
Yu Mu1, Boqiang Chen1, Hongna Zhang1
1Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States.
Journal of the American Chemical Society
|April 30, 2024
概括
使用氧化铁 (Fe2O3) 的电化学Baeyer-Villiger氧化实现了生产的高选择性. 这种方法利用表面氧中间体,克服传统氧基工艺的局限性.
科学领域:
- 电化学
- 有机合成
- 催化剂
背景情况:
- 贝耶-维利格氧化是合成的关键氧原子转移 (OAT) 过程.
- 传统的方法依赖于石化过氧化物,这带来了处理挑战.
- 电化学方法提供了可持续的替代方案,但通常具有较低的选择性.
研究的目的:
- 开发一种高度选择性的电化学Baeyer-Villiger氧化方法.
- 使用水作为可持续的氧气来源.
- 研究表面启动的OAT反应的机制.
主要方法:
- 使用Fe2O3作为催化剂的环素的电化学氧化.
- 用于识别反应中间体的光电化学表征.
- 动力学研究以阐明反应机制.
主要成果:
- 实现了近乎完美的环素氧化选择性.
- 已确定表面氧中间体 (M-OOH) 对于高选择性至关重要.
- 证明表面封闭可以最小化相互竞争的反应.
结论:
- Fe2O3 能够进行高度选择性的 Baeyer-Villiger 氧化.
- 表面启动的核氧化是一种可行的有机合成策略.
- 这项工作扩大了电化学有机合成工具的范围.
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