Axially chiral amidines and guanidines. some possessing C-2-symmetry, have been targeted as potential chiral catalysts for reactions of alpha,beta -unsaturated carboxylic acids or esters. The key step in each synthesis required the coupling of two sterically demanding aromatic compounds to form atropisomeric biaryl species. (C) 2000 Elsevier Science Ltd. All rights reserved.
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Zhejiang Univ Technol, Catalyt Hydrogenat Res Ctr, Hangzhou 310014, Peoples R ChinaZhejiang Univ Technol, Catalyt Hydrogenat Res Ctr, Hangzhou 310014, Peoples R China
Feng, Kai-Xiang
Tang, Cheng-Ke
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Tang, Cheng-Ke
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Xia, Ai-Bao
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Zhang, Xing
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Zhengzhou Univ, Green Catalysis Ctr, Zhengzhou 450001, Peoples R China
Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R ChinaZhengzhou Univ, Green Catalysis Ctr, Zhengzhou 450001, Peoples R China
Han, Tian-Jiao
Zhang, Zheng-Xu
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Wang, Min-Can
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Mei, Guang-Jian
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Zhejiang Univ Technol, Catalyt Hydrogenat Res Ctr, Hangzhou 310014, Peoples R ChinaZhejiang Univ Technol, Catalyt Hydrogenat Res Ctr, Hangzhou 310014, Peoples R China
Feng, Kai-Xiang
Tang, Cheng-Ke
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Huang, Li-Sha
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Huang, Li-Sha
Zhou, Zhan-Yu
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Zhou, Zhan-Yu
Zhang, Xing
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Zhang, Xing
Du, Xiao-Hua
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Du, Xiao-Hua
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Zhengzhou Univ, Green Catalysis Ctr, Zhengzhou 450001, Peoples R China
Zhengzhou Univ, Coll Chem, Zhengzhou 450001, Peoples R ChinaZhengzhou Univ, Green Catalysis Ctr, Zhengzhou 450001, Peoples R China
Han, Tian-Jiao
Zhang, Zheng-Xu
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Zhang, Zheng-Xu
Wang, Min-Can
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Wang, Min-Can
Xu, Li-Ping
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Shandong Univ Technol, Sch Chem & Chem Engn, Zibo 255000, Shandong, Peoples R ChinaZhengzhou Univ, Green Catalysis Ctr, Zhengzhou 450001, Peoples R China
Xu, Li-Ping
Mei, Guang-Jian
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