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Catalytic Asymmetric Intermolecular [3 + 2] Photocycloaddition of Cyclopropylamines with Electron-Deficient Olefins
An enantioselective intermolecular [3 + 2] cycloaddition of N-arylcyclopropylamines with 2-aryl acrylates/ketones and cyclic ketone-derived terminal olefins via asymmetric photoredox catalysis is reported. A dual catalyst system involving DPZ and a chiral phosphoric acid is effective for the transfo...
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Published in: | Organic letters 2023-06, Vol.25 (24), p.4551-4555 |
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container_issue | 24 |
container_start_page | 4551 |
container_title | Organic letters |
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creator | Dai, Yating Huang, Hongchun Liang, Shuangshuang Yin, Yanli Ban, Xu Zhao, Xiaowei Jiang, Zhiyong |
description | An enantioselective intermolecular [3 + 2] cycloaddition of N-arylcyclopropylamines with 2-aryl acrylates/ketones and cyclic ketone-derived terminal olefins via asymmetric photoredox catalysis is reported. A dual catalyst system involving DPZ and a chiral phosphoric acid is effective for the transformations, leading to a wide array of valuable cyclopentylamines with high yields, ee’s, and drs. Among them, elaborate modulation of the ester group of 2-aryl acrylates was shown to be effective in improving reactivity, thereby enabling the success of the transformations. |
doi_str_mv | 10.1021/acs.orglett.3c01585 |
format | article |
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title | Catalytic Asymmetric Intermolecular [3 + 2] Photocycloaddition of Cyclopropylamines with Electron-Deficient Olefins |
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