| Asymmetric Pinacol Coupling of Aromatic Aldehydes Catalyzed by TiCl_4(THF)_2-Zn/Chiral Diamines |
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| 作者姓名： | 李有桂 蒋昌盛 田青杉 柯玉萍 尤田耙 |
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| 作者单位： | Department of Chemistry，Department of Chemistry，Department of Chemistry，Department of Chemistry，Department of Chemistry University of Science & Technology of China，Hefei，Anhui 230026，China，University of Science & Technology of China，Hefei，Anhui 230026，China，University of Science & Technology of China，Hefei，Anhui 230026，China，University of Science & Technology of China，Hefei，Anhui 230026，China，University of Science & Technology of China，Hefei，Anhui 230026，China |
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| 基金项目： | ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 9872 0 3 5 ) |
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| 摘 要： | IntroductionFormationofradicalanionscatalyzedbythetransitionmetalisachallengingfieldinorganicsynthesisasitcanleadtopotentialcontrolofdiastereoselectivityandenan tioselectivityinawiderangeoforganictransformations .1Thereductivecouplingreactionofaldehydesisanimpor tantmethodofcarbon carbonbondformation .Itisalsothemostdirectandefficientmethodofsynthesizingvicinaldi ols .2 ,3VariousmetalssuchasMg ,4 Al,5Zn ,6 Ce ,7Mn ,8Sm ,9Ti,10 Sn11andCr12 havebeenshowntobeefficientinpinacolcoupling .Sincet…
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Asymmetric Pinacol Coupling of Aromatic Aldehydes Catalyzed by TiCl_4(THF)_2-Zn/Chiral Diamines |
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| LI,You Gui JIANG,Chang Sheng TIAN,Qing Shan KE,Yu Ping YOU,Tian Pa.Asymmetric Pinacol Coupling of Aromatic Aldehydes Catalyzed by TiCl_4(THF)_2-Zn/Chiral Diamines[J].Chinese Journal of Chemistry,2003(10). |
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| Authors: | LI You Gui JIANG Chang Sheng TIAN Qing Shan KE Yu Ping YOU Tian Pa |
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| Institution: | LI,You Gui JIANG,Chang Sheng TIAN,Qing Shan KE,Yu Ping YOU,Tian Pa Department of Chemistry,University of Science & Technology of China,Hefei,Anhui 230026,China |
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| Abstract: | Asymmetric pinacol coupling of aromatic aldehydes catalyzed by chiral diamines/low valent titanium complexes gave corresponding pinacols in good yields with high diastereoselectivity and moderate enantioselectivities. |
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| Keywords: | chiral diamine pinacol asymmetric coupling enantioselectivity |
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