含硫的盐类复合物用于选择性碳化环氧化物:通往聚和循环乳的途径
Shuai Li1,2, Shuyan Liu2, Rui Yan2
1College of Material, Chemistry and Chemical Engineering, Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry Education, Hangzhou Normal University, Hangzhou, 310036, China.
Chemistry (Weinheim an der Bergstrasse, Germany)
|March 25, 2025
概括
这项研究优化了使用salen型催化剂的环氧化碳化. 连接物设计指向聚或循环乳的选择性,这对于C1转化为有价值的化学物质至关重要.
科学领域:
- 催化和绿色化学的研究.
- 有机金属化学 有机金属化学
- 聚合物科学 聚合物科学
背景情况:
- 碳化是将C1原料转化为化学品的关键.
- 环氧化碳化提供了一条通往聚和乳的途径.
- 盐类复合物是各种有机转变的有效催化剂.
研究的目的:
- 为了研究金属中心和连接体结构在salen类型复合体对环氧化碳化物的影响.
- 为优化聚和循环乳生产的选择性和产量.
- 了解催化环氧化碳化中的结构-活性关系.
主要方法:
- 具有Cr (III) 和Al (III) 金属中心的salen类复合物的合成和表征.
- 使用四牙酸二联体 ([ONSO]和[ONNO]类型).
- 采用八碳 (Co2(CO) 8) 作为环氧碳化反应的联合催化剂.
主要成果:
- [ONSO]类型的Cr(III) 复合物有利于聚的形成 (73%的选择性).
- [ONNO] 类型的Cr(III) 和Al(III) 复合物主要产生周期性乳 (99%的β-丁烯酸乳选择性).
- 用[ONNO]型复合物的乙烯氧化碳化显示了99%以上的烯酸选择性,证明了催化剂的控制.
结论:
- 萨兰型复合体中的配体设计对于控制环氧化碳化路径至关重要.
- 电子捐赠硫的捐赠者促进聚的形成,而增强的电友性有利于循环乳的生产.
- 这项工作为开发针对高效C1转化量身定制的催化剂提供了基础.
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