Bulletin of the Korean Chemical Society

  • 제18권12호
  • /
  • Pages.1301-1304
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  • 1997
  • /
  • 0253-2964(pISSN)
  • /
  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Mechanism of Elimination from (E)-2,4-Dinitrobenzaldehyde O-pivaloyloxime Promoted by $R_2NH/R_2NH_2$+ buffer in 70% MeCN(aq)

  • 발행 : 1997.12.20
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초록

Elimination reactions of (E)-2,4-dinitrobenzaldehyde O-pivaloyloxime promoted by R2NH/R2NH2+ buffer in 70% MeCN(aq) have been studied kinetically. The reaction exhibited second order kinetics and general base catalysis with Bronsted β=0.45. The Hammett ρ value decreased from 2.3 to 1.6 as the base-solvent system was changed from DBU in MeCN to R2NH/R2NH2+ buffer in 70% MeCN(aq). From these results an E2 mechanism is proposed.

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참고문헌

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