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Bifunctional Primary Amine-Squaramide Catalyzed Enantioselective Intramolecular Michael Addition of Keto-enones: A Convenient Process to the Stereocontrolled Construction of trans-Dihydrobenzofuran Skeletons  
Bifunctional Primary Amine-Squaramide Catalyzed Enantioselective Intramolecular Michael Addition of Keto-enones: A Convenient Process to the Stereocontrolled Construction of trans-Dihydrobenzofuran Skeletons
資料類型: PDF文件
關(guān)鍵詞: Chiral  Catalysis  Squaramide  Michael  Addition  
資料大小: 358k
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來(lái)源: 來(lái)源網(wǎng)絡(luò)
簡(jiǎn)介:
A highly diasterero- and enantioselective intramolecular Michael addition of keto-enones has been realized. By using the (R,R)-1,2-diphenylethane-1,2-diamine-based bifunctional primary amine-squaramide catalyst, the reaction proceeded smoothly to generate the corresponding trans-2,3-disubstituted dihydrobenzofuran derivatives in excellent yields with good to excellent diastereo- and enantioselectivities (up to 97:3 dr, up to 99% ee).
上傳人: hukeling
上傳時(shí)間: 2021-01-12 13:50:28
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