• Title/Summary/Keyword: Olefin-keteniminium salt

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Synthesis of The Optically Active Bicyclo [4.2.0. ] octanone by Stereoselective Intramolecular [2+2] Cycloaddition (입체선택적인 분자내 [2+2] 환화반응을 이용한 광학활성 Bicyclo[4.2.0.]octanone의 합성)

  • Shim, Pil-Jong;Kim, Hee-Doo
    • YAKHAK HOEJI
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    • v.41 no.6
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    • pp.714-717
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    • 1997

  • Stereoselective synthesis of the optically active bicyclo [4.2.0] octanone 5 was accomplished using intramolecular olefin-keteniminium salt[2+2]cycloaddition of the amide 4 as a key step. This important chiral synthon was prepared starting from readily available L-glutamic acid via an efficient 8-step sequence.

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