从氧化醇中选择性合成α,β不和化物,使用来自电化学两电子氧化水的氧化供应过氧化
Yoshihiro Kon1,2, Yuka Kimishima1, Kazuhisa Murata2
1Interdisciplinary Research Center for Catalytic Chemistry, National Institute of Advanced Industrial Science and Technology (AIST) Tsukuba Ibaraki 305-8565 Japan y-kon@aist.go.jp.
RSC advances
|February 11, 2025
概括
电化学水氧化产生过氧化 (H2O2),用于选择性醇氧化. 这种方法有效地使用催化剂将各种醇转化为有价值的α,β不和化物.
科学领域:
- 绿色化学 绿色化学
- 电触媒溶解是一种电触媒.
- 有机合成 有机合成
背景情况:
- 在有机合成中,选择性氧化合醇到α,β不和化物至关重要.
- 传统方法通常涉及苛刻的试剂或产生大量的废物.
- 开发可持续和高效的氧化催化剂仍然是一个关键的挑战.
研究的目的:
- 开发一种使用电化学生成的过氧化 (H2O2) 来选择性氧化醇的新方法.
- 研究使用黑催化剂与通过两电子水氧化 (2e-WOR) 产生的H2O2结合使用.
- 为了优化反应条件,以获得高产量和选择性,将醇转化为化物.
主要方法:
- 电化学生成H2O2通过二电子水氧化 (2e-WOR) 在化氧化 (FTO) 阳极使用KHCO3/K2CO3电解质.
- 使用电化学生成的H2O2在烯溶液中的Pt黑催化剂的存在下选择性氧化合醇.
- 优化Pt黑催化剂加载和H2O2引入的速度,以控制反应.
主要成果:
- 在优化条件下 (60°C,烯) 选择性氧化为geranial,产量为86%,选择性为99%.
- 电化学生成的H2O2有效地将各种合醇氧化为相应的化物,达到64%至89%的隔离产量.
- 对催化剂量和H2O2输送的精确控制使得即使在较低的H2O2度下也能够进行选择性氧化.
结论:
- 电化学生成H2O2为选择性氧化合醇提供了可持续和高效的替代方案.
- 黑色Pt催化系统证明了从各种醇基质中合成α,β不和化物的广泛适用性.
- 这种方法代表了绿色化学的重大进步,最大限度地减少废物,并利用电化学进行有价值的有机转化.
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