环烯:合成,表征和对终端基因的反应性
Hongping Zhu1, Rainer B Oswald, Hongjun Fan
1Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D-37077 Göttingen, Germany.
Journal of the American Chemical Society
|April 13, 2006
概括
化合物与基的反应形成了新型环烯. 这些化合物表现出高反应性,表明新合成途径的潜力.
科学领域:
- 有机金属化学 有机金属化学
- 主要组化学主要组化学
- 合成无机化学 合成无机化学
背景情况:
- (((I) 化合物是具有独特结合特性的反应性物种.
- 环烯是一种有机化合物的类,在催化和合成中具有潜在的应用.
研究的目的:
- 研究一种特定的I复合物 (LAl) 与各种基的反应.
- 为了合成和表征新的环衍生物.
- 通过实验和计算方法探索这些环烯物种的反应性和结合性.
主要方法:
- LAl与乙烯,单基和非替代基以及二基因的反应.
- 在受控温度条件下合成氨酸cyclopropenes LAl[eta2-C2(R1)(R2) ].
- 通过替代或还原性合来替代合成化合物4.
- DFT计算用于研究电子结构和粘合.
- 1H NMR光谱检测反应路径.
主要成果:
- 成功合成了氨酸cyclopropenes (1-4) 和alkenylalkynylaluminum化合物 (5-8). 这种化合物可以在中产生.
- DFT计算表明Al (I) - 基相互作用的低激活能量和显著的Al-C键顺序.
- 计算的Al-eta2-C2键解离能量显示了氨酸cyclopropenes的高反应性.
- 1H NMR研究表明潜在的乙酸迁移过程.
结论:
- LAl很容易与基因反应,形成稳定的环烯复合体.
- 合成的氨酸cyclopropenes是高度反应的中间体.
- 计算和实验数据为这些有机化合物的结合和反应性提供了洞察力.
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