Double cobalt-catalyzed atroposelective C–H activation: One-step synthesis of atropisomeric indoles bearing vicinal C–C and C–N diaxes - Archive ouverte HAL Access content directly
Journal Articles Chem Catalysis Year : 2023

Double cobalt-catalyzed atroposelective C–H activation: One-step synthesis of atropisomeric indoles bearing vicinal C–C and C–N diaxes

Abstract

Expanding the borders of asymmetric synthesis by designing original chiral molecules and sustainable strategies to synthesize them holds great promise not only for the pharmaceutical industry but also for material science and agrochemistry. In particular, straightforward, one-step synthesis of enantiopure scaffolds featuring two proximal chiral axes presents a great scientific challenge. Herein, unique asymmetric C-H activation reaction has been used to achieve the first intermolecular direct arylation-type reaction, affording indoles bearing simultaneously C2-atropisomeric Ar-Ar' axis together with C-N axial chirality. Remarkably, the desired reactivity could be achieved using a chiral cobalt complex as a sustainable and cheap catalyst, thus delivering the expected multiatropisomeric compounds in high yields and excellent diastereoselectivities and enantioselectivities. In addition, detailed mechanistic studies provide fundamental comprehension of this unique transformation.
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Thursday, July 25, 2024
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Thursday, July 25, 2024
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hal-04418400 , version 1 (25-01-2024)

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Amandine Luc, João C.A. Oliveira, Philipp Boos, Nicolas Jacob, Lutz Ackermann, et al.. Double cobalt-catalyzed atroposelective C–H activation: One-step synthesis of atropisomeric indoles bearing vicinal C–C and C–N diaxes. Chem Catalysis, 2023, 3 (10), pp.100765. ⟨10.1016/j.checat.2023.100765⟩. ⟨hal-04418400⟩
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