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Synthesis 1975; 1975(12): 765-780
DOI: 10.1055/s-1975-23920
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Bis-Wittig Reactions in the Synthesis of Nonbenzenoid Aromatic Ring Systems

K. Peter C. VOLLHARDT*
  • *Department of Chemistry, University of California, Berkeley, California 94720, U.S.A.
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Publication Date:
12 September 2002 (online)

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The synthesis of nonbenzenoid aromatic molecules containing small, medium, and large membered rings using the Wittig reaction ("bis-Wittig reaction") between dicarbonyl compounds and bisylids is reviewed. The cyclic systems formed by this reaction range from five membered to thirty-six membered compounds. 1. General Aspects of the Bis-Wittig Reaction 2. Five Membered Rings 3. Six Membered Rings 4. Seven Membered Rings 5. Eight Membered Rings 6. Nine Membered Rings 7. Ten Membered Rings 8. Eleven Membered Rings 9. Twelve Membered Rings 10. Thirteen Membered Rings 11. Fourteen Membered Rings 12. Fifteen Membered Rings 13. Sixteen Membered Rings 14. Seventeen Membered Rings 15. Eighteen Membered and Larger Rings 16. Addendum

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