1-Lithio-2,2-diphenoxy-1-(phenylsulfonyl)cyclopropane as β-lithio acrylate and cyclopropanone acetal anion synthons.
1-Lithio-2,2-diphenoxy-1-(phenylsulfonyl)cyclopropane (4) reacted with alkyl halides to give the alkylated cyclopropyl sulfones 6, which were subjected to hydrolysis with TiCl4in CH2Cl2followed by elimination of the phenylsulfonyl group with DBU to afford α,β-unsaturated esters 8 and small amount of...
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| 格式: | Article |
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2018
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| 在線閱讀: | https://repository.li.mahidol.ac.th/handle/123456789/22542 |
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| 機構: | Mahidol University |