カサシマ ヨシオ   YOSHIO KASASHIMA
  笠嶋 義夫
   所属   千葉工業大学  創造工学部 教育センター(創造工学部)
   職種   教授
言語種別 英語
発行・発表の年月 2026/01/05
形態種別 学術雑誌
査読 査読あり
標題 Fluxional Axially Chiral P,Pyridine Ligands for Pd-Catalyzed Asymmetric Allylic Alkylation
執筆形態 共著
掲載誌名 The Journal of Organic Chemistry
掲載区分国外
出版社・発行元 American Chemical Society.
巻・号・頁 91(2),pp.1156-1164
総ページ数 9
著者・共著者 Kohei Watanabe, Ayano Suzuki, Nana Oguri, Yasushi Yoshida, Yoshio Kasashima, Ryo Takita, Masami Sakamoto, and Takashi Mino
概要 We synthesized chiral P,pyridine-type ligands (S)-L1–4 with fluxional chirality and demonstrated Pd-catalyzed asymmetric allylic alkylation with malonates achieving high enantioselectivities (up to 91% ee). DFT calculations suggest that the chiral phenylethyl moiety plays a crucial role in attaining enantioselectivity by regulating not only the fluxional axial chirality of the ligand but also the orientation of the π-allyl group through CH−π interactions.
DOI 10.1021/acs.joc.5c02806
ISSN 1520-6904