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Asymmetric Conjugate Additionof Arylboronic Acids to Enones Catalyzed by Rhodium-MonodentatePhosphoramidite Complexes in the Presence of Bases

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タイトル: Asymmetric Conjugate Additionof Arylboronic Acids to Enones Catalyzed by Rhodium-MonodentatePhosphoramidite Complexes in the Presence of Bases
著者: Iguchi, Yuki 著作を一覧する
Itooka, Ryoh 著作を一覧する
Miyaura, Norio 著作を一覧する
キーワード: arylboronic acids
rhodium catalyst
phosphoramidite
asymmetric
conjugate addition
発行日: 2003年 6月
出版者: Georg Thieme Verlag
誌名: Synlett
号: 7
開始ページ: 1040
終了ページ: 1042
出版社 DOI: 10.1055/s-2003-39315
抄録: Rhodium(I)-catalyzed 1,4-addition of arylboronic acids to α,β-unsaturatedcarbonyl compounds was carried out in the presence of a chiral phosphoramiditeligand based on (R)-binol and dialkylamines.The reaction was significantly accelerated in the presence of abase such as KOH and Et3N, allowing the reaction to becompleted within 6 hours at 50 °C. The additionto 2-cyclohexenone achieved enantioselectivities up to 99%,though they were less effective for 2-cyclopentenone (79% ee),2-cycloheptenone (77% ee) and acyclic enones (31-43% ee).
資料タイプ: article (author version)
URI: http://hdl.handle.net/2115/14621
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 宮浦 憲夫

 

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