Reaction of Dypnone in the Presence of BF<SUB>3</SUB>, 85% H<SUB>3</SUB>PO<SUB>4</SUB> Complexes

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  • KOGURE Masakuni
    Depertment of Applied Chemistry, School of Science and Engineering, Waseda University
  • TAKEZONO Kunito
    Depertment of Applied Chemistry, School of Science and Engineering, Waseda University
  • FUJII Shuya
    Depertment of Applied Chemistry, School of Science and Engineering, Waseda University

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Other Title
  • 三フッ化ホウ素,85% H<SUB>3</SUB>PO<SUB>4</SUB>系錯体存在下におけるジプノンの反応
  • Reaction of Dypnone in the Presence of BF3, 85% H3PO4 Complexes

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Description

The hydrolytic cleavage of dypnone (3) to benzoic acid (A-cleavage reaction) catalyzed by BFs was found to be promoted considerably by the addition of inorga nic acids. Moreover the condensation of (3) was suppressed t o some extent by the addition of 85% H3POi.<BR>Difference in activities of BF3 85% HsPOs complexes and BFg, water complexes for A-cleavage reaction was examined. The rate oHormation of (1) cafalyzed with BF3, 85%H4PO4(BF/(H3PO4+H20)=1(mol/mol)) was about three times faster than with BF3, H20. The former complex was more stable for heat. The order of activity for A-cleavage reaction was as follows;<BR>BFs, 8596 HgPOb BFs, H20 BFs 2(85% HgPO4) BF3, 2H20.

Journal

  • NIPPON KAGAKU KAISHI

    NIPPON KAGAKU KAISHI 1973 (3), 552-556, 1973-03-10

    The Chemical Society of Japan

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