Asymmetric synthesis of (3S,4S)-3-phenylsulfonyl-4-phenylazetidin-2-ones in up to 46% ee from achiral amines and 2-phenylsulfonyl-3-phenylpropenoyl chloride was achieved with chiral Lewis-acid catalysis by salen-copper(II) complexes derived from (1R, 2R)-(-)-1,2-diaminocyclohexane. The absolute configuration was assigned by single crystal, X-ray crystallographic analyis of enantiomerically pure (3S,4S)-(-)-3-phenylsulfonyl-4-phenylazetidin-2-one (7). (C) 1999 Elsevier Science Ltd. All rights reserved.
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Maharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, IndiaMaharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, India
Deep, Aakash
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Kumar, Pradeep
Narasimhan, Balasubrmanian
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Maharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, IndiaMaharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, India
Narasimhan, Balasubrmanian
Meng, Lim Siong
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Univ Teknol MARA UiTM, Fac Pharm, Collaborat Drug Discovery Res Grp, Campus Puncak Alam, Bandar Puncak Alam 42300, Selangor, MalaysiaMaharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, India
Meng, Lim Siong
Ramasamy, Kalavathy
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Univ Teknol MARA UiTM, Fac Pharm, Collaborat Drug Discovery Res Grp, Campus Puncak Alam, Bandar Puncak Alam 42300, Selangor, MalaysiaMaharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, India
Ramasamy, Kalavathy
Mishra, Rakesh Kumar
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Univ Teknol MARA UiTM, Fac Pharm, Brain Res Lab, Campus Puncak Alam, Bandar Puncak Alam 42300, Selangor, MalaysiaMaharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, India
Mishra, Rakesh Kumar
Mani, Vasudevan
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Univ Teknol MARA UiTM, Fac Pharm, Brain Res Lab, Campus Puncak Alam, Bandar Puncak Alam 42300, Selangor, MalaysiaMaharshi Dayanand Univ, Fac Pharmaceut Sci, Rohtak 124001, Haryana, India