Highly diastereoselective ortho-lithiati
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Wanbin Zhang; Yoichi Adachi; Toshikazu Hirao; Isao Ikeda
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Article
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1996
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Elsevier Science
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English
⚖ 572 KB
C2-Symmetric 1, l',2,2'-tetrasubstituted ferrocene derivatives are prepared in high yields from chiral 1,1'-bis(oxazolinyl)ferrocenes v/a diastereoselective o,o'-dilithiation with sec-butyUithium followed by nucleophilic substitution. 1, l'-Bis(oxazolinyl)ferrocenes were prepared from 1,1 '-ferrocen