通过三重能量转移实现的分子间 [2π+2σ] - 光环添加
Roman Kleinmans1, Tobias Pinkert1, Subhabrata Dutta1
1Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Münster, Germany.
Nature
|March 22, 2022
概括
合成化学家现在可以使用双环进行分子间 [2+2]-光环添加. 这种新型的可见光介导反应将循环添加化学扩展到西格玛键,产生有价值的双循环[2.1.1] 六结构.
科学领域:
- 有机化学
- 摄影化学
- 合成方法
背景情况:
- 光化学 [2+2] - 循环添加传统上涉及两个π电子系统形成循环.
- 现有的方法主要集中在 [2π+2π] 循环加法上,将两个π键转换为两个新的C-C σ键.
- 作为生物异构剂,在药物研究中重要的双环[2.1.1]hexanes的使用是有限的.
研究的目的:
- 报告一个新的分子间 [2+2]-光环添加反应.
- 使用双环[1.1.0]布坦作为2σ电子反应剂.
- 开发一种新型合成路径,以获得双环[2.1.1]hexanes.
主要方法:
- 使用可见光介导的三重能量转移催化剂.
- 在 [2π+2σ]-光环添加中使用双环[1.1.0]作为σ-键合成子.
- 合异环烯,如氨酸,氨酸和醇.
主要成果:
- 证明涉及 σ 键的分子间 [2+2] 光环添加.
- 开发一种简单的,模块化的,并选择性合成的双环[2.1.1]hexanes.
- 产生以前无法获得的结构图案.
结论:
- 开发的策略成功地将分子间 [2+2]-光环添加物扩展到 σ 键.
- 这种方法为合成bicyclo[2.1.1]hexane支架提供了有价值的新方法.
- 这种反应为药物化学提供了新的分子结构.
![Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions](/_next/image?url=https%3A%2F%2Fcloudfront.jove.com%2FCDNSource%2Fteasers%2F60786.jpg&w=3840&q=50)
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