1. Iridium‐Catalyzed Enantioselective C(sp3)−H Borylation of Aminocyclopropanes.
- Author
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Shi, Yongjia, Yang, Yuhuan, and Xu, Senmiao
- Subjects
- *
BORYLATION , *FUNCTIONAL groups , *IMIDES - Abstract
Transition‐metal‐catalyzed regio‐ and stereo‐controllable C−H functionalization remains a formidable challenge in asymmetric catalysis. Herein, we disclose the first example of iridium‐catalyzed C(sp3)−H borylation of aminocyclopropanes by using simple imides as weakly coordinating directing groups under mild reaction conditions. The reaction proceeded via a six‐membered iridacycle, affording a vast range of chiral aminocyclopropyl boronates. The current method features a broad spectrum of functional groups (36 examples) and high enantioselectivities (up to 99 %). We also demonstrated the synthetic utility by a preparative scale C−H borylation, C−B bond transformations, and conversion of the directing group. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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