非対称な触媒のための強力なキラル超ブロンステッドC-H酸
Bingfei Peng1, Jiguo Ma1,2, Jianhua Guo1
1The Education Ministry Key Lab of Resource Chemistry, Shanghai Key Laboratory of Rare Earth Functional Materials, and Shanghai Frontiers Science Center of Biomimetic Catalysis, Shanghai Normal University, Shanghai 200234, China.
Journal of the American Chemical Society
|February 10, 2022
まとめ
新しいキラルな超ブレンステッドC-H酸,BINOL由来のリン酸二酸化塩素 (BPTM) は,優越した酸性およびエナチオ選択性を提供します. これらのBPTMは,様々な有機反応における非対称なブロンステッド酸触媒を推進する.
科学分野:
- 有機化学
- キャタリシス
背景:
- キラルリン酸 (BPA) とN-トリフリルリン酸 (NTPA) は,キラルブレンステッド酸触媒として確立されています.
- より強いキラルブレンステッド酸の開発は,非対称な触媒の進歩に不可欠です.
研究 の 目的:
- 酸性および触媒性能を向上した新型のキラル超ブレンステッドC-H酸を開発する.
- これらの新しい酸の有効性を評価する.
主な方法:
- BINOL由来フォスフォリルビースルフォニルメタン (BPTM) の合成
- ブロンステッド酸度におけるBPTMとBPAとNTPAの比較研究
- BPTMを非対称的なムカヤマ-マニッヒ反応,アリルアミネーション,三成分結合,シリルエノールエーテルプロトネーションで触媒として使用する.
主要な成果:
- BPTMはBPAやNTPAに比べると ブロンステッド酸度がかなり高い.
- BPTMを使用すると,触媒活性が劇的に向上し,優れたエナチオ選択性が得られました.
- ムカイヤマ-マニッヒ反応,アリルアミネーション,三要素結合を含む複数の非対称反応の成功実証.
結論:
- BPTMは強力なキラルな超ブレンステッドC-H酸の新種である.
- これらの発見は,非対称的なブロンステッド酸触媒の範囲と効率を拡大します.
- BPTMは,キラル触媒の将来の開発のための多用途のプラットフォームを提供します.
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