通过使用分子氧的多氧酸基MOF催化的氨基醇合成氨基酸的环保合成
Hui Chen1, Hongrui Tian1, Yubing Sui1
1School of Petrochemical Engineering, Liaoning Petrochemical University, Fushun 113001, China.
新的多氧瓦纳酸-框架有效地利用分子氧气催化氨基氧 (APXOs) 的合成. 这种绿色化学方法证明了制药应用的高产量,可回收性和可扩展性.
科学领域:
- 材料科学 材料科学 材料科学
- 催化剂是一种催化剂.
- 绿色化学 绿色化学
背景情况:
- 氨基氧 (APXOs) 是药品,染料和天然产品中的关键支架.
- 高效和环保的APXO合成是非常理想的,但具有挑战性.
- 金属有机框架 (MOF) 为催化应用提供可调节的特性.
研究的目的:
- 开发基于聚氧瓦纳的新型MOF作为异质催化剂.
- 研究这些MOF的催化活性,用于o-aminophenol (OAP) 的氧化凝聚.
- 探索催化过程的机制,可回收性和可扩展性.
主要方法:
- 合成两种基于聚氧纳的MOFs:[M(Htmtib) 2][V6O17 (M = Co 1,Ni 2). 两种MOF的合成方法包括:
- 用乙醇中的O2用于OAP转化为2-aminophenoxazinone的催化试验.
- 机理学研究,基质耐受性测试,可回收性实验和克拉尺度反应.
主要成果:
- 催化剂1 (共基) 实现了99.0%的产量,而催化剂2 (基于Ni) 的产量为69.3%.
- 机理学研究表明,Co和V位点之间具有协同效应,涉及超氧化基.
- 催化剂1在五个循环中表现出极好的可回收性和成功的克尺度合成 (98.0%的产量,TON=4900,E因子=0.83).
结论:
- 开发的聚氧酸-框架作为APXO合成的高效,无添加剂的异质催化剂.
- 催化过程利用分子氧作为绿色乙醇介质中的氧化剂,展示了高性能和环保性.
- 催化剂的强度,可回收性和可扩展性使其成为工业应用的有希望的候选者.
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