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Enantioselective Synthesis of 1,2-Benzothiazine 1-Imines via Ru-II/Chiral Carboxylic Acid-Catalyzed C-H Alkylation/Cyclization

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Title: Enantioselective Synthesis of 1,2-Benzothiazine 1-Imines via Ru-II/Chiral Carboxylic Acid-Catalyzed C-H Alkylation/Cyclization
Authors: Huang, Long-Tao Browse this author
Kitakawa, Yuta Browse this author
Yamada, Kodai Browse this author
Kamiyama, Futa Browse this author
Kojima, Masahiro Browse this author →KAKEN DB
Yoshino, Tatsuhiko Browse this author →KAKEN DB
Matsunaga, Shigeki Browse this author →KAKEN DB
Keywords: 1,2-Benzothiazine 1-Imine
Asymmetric Catalysis
C-H Activation
Ruthenium
Sulfondiimine
Issue Date: 17-May-2023
Publisher: Wiley-Blackwell
Journal Title: Angewandte chemie-international edition
Volume: 62
Issue: 29
Start Page: e202305480
Publisher DOI: 10.1002/anie.202305480
Abstract: Sulfondiimines are diaza-analogues of sulfones with a chiral sulfur center. Compared to sulfones and sulfoximines, their synthesis and transformations have so far been studied to a lesser extent. Here, we report the enantioselective synthesis of 1,2-benzothiazine 1-imines, i.e., cyclic sulfondiimine derivatives from sulfondiimines and sulfoxonium ylides via C-H alkylation/cyclization reactions. The combination of [Ru(p-cymene)Cl-2](2) and a newly developed chiral spiro carboxylic acid is key to achieving high enantioselectivity.
Rights: This is the peer reviewed version of the following article: https://onlinelibrary.wiley.com/doi/10.1002/anie.202305480, which has been published in final form at 10.1002/anie.202305480. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Type: article (author version)
URI: http://hdl.handle.net/2115/92582
Appears in Collections:薬学研究院 (Faculty of Pharmaceutical Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 吉野 達彦

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