从循环 (基) 氨基) 碳 (CAAC) 前体到化试剂. 实验和理论研究研究实验和理论研究
Evelin Gruden1, Griša Grigorij Prinčič2, Jan Hočevar2
1Department of Inorganic Chemistry and Technology, "Jožef Stefan" Institute, Jamova cesta 39, Ljubljana, Slovenia. gasper.tavcar@ijs.si.
Dalton transactions (Cambridge, England : 2003)
|June 27, 2023
概括
研究人员使用基于碳的前体合成了含有高化 (HF) 的新型盐. 最稳定的盐,[MeCAACH][F(HF) 2],有效化了各种有机化合物,证明了其作为核性化试剂的潜力.
科学领域:
- 有机金属化学 有机金属化学
- 化化学 化化学
- 计算化学计算化学
背景情况:
- 碳基盐正在成为合成化学中的多功能试剂.
- 精确控制盐中的化 (HF) 含量是具有挑战性的,但对于反应性至关重要.
- 了解富含HF盐的稳定性和反应性需要详细的结构和计算分析.
研究的目的:
- 为了合成和表征具有不同化含量的新型碳基盐.
- 为了研究这些富含HF的盐的稳定性和不成比例行为.
- 评估最稳定的盐在有机合成中作为核性化试剂的潜力.
主要方法:
- 通过控制的HF添加和去除,用[MeCAACH][Cl(HCl) 0.5]合成化添加物.
- 使用诸如X射线晶体学和真空方法等技术对合成盐的表征.
- 密度函数理论 (DFT) 计算以研究结构关系和热力学稳定性.
- 在各种有机基质上测试最稳定的盐的化能力.
主要成果:
- 实现了具有高HF含量的[MeCAACH][F(HF) ]2和[MeCAACH][F(HF) ]3盐的选择性制备.
- 一种含有[F(HF) 4) - 离子的盐,[MeCAACH][F(HF) 3.5],也得到了特征.
- 该化合物[MeCAACH][F(HF) ] ([MeCAACH][F(HF)]) 证明不稳定,不成比例地扩散到其他物种.
- DFT研究表明对计算方法的敏感性和准确的结构描述的基础设置质量.
- 盐[MeCAACH][F(HF) 2]证明了作为核性化试剂的有效性,从基化物,基化物,西兰酸盐和硫酸盐中产生化物,产量良好至优异.
结论:
- 基于[MeCAACH]阳离子的新型富HF盐成功合成和表征.
- 这些盐的稳定性取决于HF含量和实验条件.
- [MeCAACH][F(HF) ]是一种有前途且稳定的核性化剂,用于各种有机转化.
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