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Updated: Jun 30, 2026

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Synthesis of Esters Via a Greener Steglich Esterification in Acetonitrile
Published on: October 30, 2018
复合物催化酸乙氨基化酸乙的酸乙
1Department of Chemistry, Graduate School of Integrated Science, Yokohama City University, 22-2 Seto, Kanazawa-ku, Yokohama 236-0027, Japan. rtakeuch@yokohama-cu.ac.jp
Journal of the American Chemical Society
|September 27, 2001
概括
复合物的催化使得碳酸盐的有效的基胺化成为可能. 乙醇等极性溶剂对于高产量至关重要,与催化剂相比,它们具有更高的选择性.
科学领域:
- 有机金属化学 有机金属化学
- 催化剂是一种催化剂.
- 有机合成 有机合成
背景情况:
- 基氨基化是有机合成中的关键转化.
- 开发高效和选择性的催化方法至关重要.
- 以前的方法往往缺乏对区域选择性和立体选择性的控制.
研究的目的:
- 为了研究复合物催化碳酸的氨基氨基化.
- 探索溶剂和反应条件对催化活性和选择性的影响.
- 建立一种新型的合成路径,用于具有高选择性的氨酸胺.
主要方法:
- 使用复合物,特别是[Ir(COD) Cl](2) 与P(OPh)(3) 作为催化剂.
- 研究了各种溶剂的影响,重点是像乙醇这样的极性溶剂.
- 检查了与不同酸碳酸盐基质和各种初级和二级胺的反应.
主要成果:
- 在使用 (E) - 酸碳酸盐的分支合氨基胺中,获得了高产量和选择性 (高达99%) .
- 与初级氨基酸观察到选择性单聚,防止二聚.
- 从1,1-非替代-2-烯酸乙酸盐中单独形成α,α-非替代的氨酸胺.
- 对于 (Z) - 线性氨酸胺,从 (Z) - 氨酸碳酸盐中具有很高的选择性 (高达100%),没有 (E) - 异构体的形成.
- 与类似的催化反应相比,证明了更高的选择性.
结论:
- 催化提供了一种高度选择性的方法,用于碳酸的氨化.
- 极地溶剂对于实现高催化活性和产量至关重要.
- 这种方法为合成具有前所未有的选择性的多种类型的氨酸胺提供了有价值的替代方案.
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