预先组织的挫败的易斯对.
Federica Bertini1, Volodymyr Lyaskovskyy, Brian J J Timmer
1Department of Chemistry and Pharmaceutical Sciences, VU University Amsterdam, De Boelelaan 1083, 1081 HV Amsterdam, The Netherlands.
Journal of the American Chemical Society
|December 22, 2011
概括
双胞胎丧的易斯对 (FLP) 显示当它们的供体和受体部位完美对齐时,反应性会提高. 这项研究证明了非化FLP与H2 ,CO2和异酸盐反应的这种效应.
科学领域:
- 化学 化学 化学
- 有机金属化学 有机金属化学
- 材料科学 材料科学 材料科学
背景情况:
- 丧的易斯对 (FLP) 是由于硬质障碍而保持反应的易斯酸对.
- 双胞胎FLP,在相同的碳原子上提供供体和接受体的位置,提供独特的结构可能性.
- 在双胞胎FLP中,捐赠体和接受体位的完美对齐被假定会增加反应性.
研究的目的:
- 为了研究非化双胞胎FLP与完美对齐的供体和受体位点的反应性.
- 探索这种FLP与小分子 (如H2),CO2和异酸盐) 的反应.
- 为了计算支持FLP反应性的实验发现.
主要方法:
- 非化双质FLP的合成和表征,tBu(2)PCH(2)BPh(2).
- 实验研究FLP与H{2},CO{2}和异酸盐的反应.
- 密度函数理论 (DFT) 计算以建模反应机制和能量学.
主要成果:
- 非化双质FLPtBu(2)PCH(2)BPh(2) 与H(2),CO(2) 和异酸盐成功发生反应.
- 实验证据支持这样的假设,即完美的对齐增强了FLP的反应性.
- 计算研究证实了观察到的反应性,并提供了对过渡状态的见解.
结论:
- 双胞胎FLP具有完美对齐的供体和受体位点,其反应性显著增加.
- 非化FLPtBu(2)PCH(2)BPh(2) 作为研究增强FLP反应性的模型系统.
- 这项工作为设计具有针对各种化学转换的定制反应能力的新型FLP提供了基础.
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