具有循环金属化复合体的酶选择性烯转化
John Hartung1, Peter K Dornan, Robert H Grubbs
1Arnold and Mabel Beckman Laboratories of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States.
Journal of the American Chemical Society
|August 20, 2014
概括
通过NHC连接物循环金属化来设计丰富催化剂,可实现高度选择性的烯转化反应. 这种方法在具有挑战性的基质的环开放/闭合和交叉转移中实现了Z-和enantioselective结果.
科学领域:
- 有机化学 有机化学
- 催化剂是一种催化剂.
- 立体化学是一种立体化学.
背景情况:
- 选择性烯转化需要催化剂,这些催化剂可以传输立体化学信息.
- 对N-异环碳素 (NHC) 连接体的循环金属化是一种创建性催化剂的策略.
研究的目的:
- 开发和评估用于不对称的氨酸转化酶的基烯复合物.
- 研究这些催化剂在各种转化反应中的立体选择性和效率.
主要方法:
- 通过循环金属化合成与NHC结合的基烯复合物的合成.
- 这些催化剂在不对称环开放/交叉转移 (AROCM),不对称环关闭转移 (ARCM) 和不对称交叉转移 (ACM) 中的应用.
- 探讨反应的可逆性和设置效应.
主要成果:
- 催化剂在norbornenes和cyclobutenes的AROCM中实现了高的Z-和enantioselectivity,观察到不同的繁殖物种.
- 证明了前性三烯的成功ARCM.
- 在一种新型的Z选择性ACM中,实现了有前途的反抗选择性,该ACM是一种前性1,4-diene.
结论:
- NHC连接体循环金属化是设计用于高度反选择性烯转化酶的性催化剂的有效策略.
- 开发的催化剂在各种不对称的转化反应中具有广泛的适用性,包括具有挑战性的基板.
- 对反应参数的进一步研究可以优化催化性能.
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