晨间信号Morning Signal
《科学》 第392卷 第6794期 · 2026年4月9日 · 中文解读

基于吡啶双噁唑啉骨架的模块化对映选择性光催化剂

Modular enantioselective photocatalysts from privileged pybox scaffolds · R. M. Kelch et al.
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这篇讲什么
本文介绍了一种通过修饰吡啶双噁唑啉配合物结构并引入咔唑单元而设计的新型对映选择性光催化剂家族,并展示了其在多种不对称光反应中的通用性。
原文开头
Riley M. Kelch1, Lea Hämmerling2, Eli Zysman-Colman2*, Tehshik P. Yoon1* Modern organic synthesis relies upon the availability of chiral catalysts to control the stereochemistry of bond-forming reactions. Several families of chiral catalysts have become recognized as “privileged” structures because of their notable generality for diverse transformations with different reaction mechanisms. However, examples of highly enantioselective photocatalyst structures remain scarce. We have designed a family of enantioselective photocatalysts by modifying the structures of privileged pyridine bis(oxazoline) complexes with electron-donating carbazole units. The chiral ligands are accessible through a three-step synthetic sequence starting from commercially available chiral pool materials, and their charge-transfer photochemistry can be rationally tuned to optimize photocatalytic activity. …
摘自《科学》(Science)第392卷 第6794期 · 2026年4月9日,R. M. Kelch et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。
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