Mechanism of Elimination from (E)-2,4-Dinitrobenzaldehyde O-pivaloyloxime Promoted by R2NH/R2NH2 + Buffer in 70% MeCN(aq)

Bong-Rae Cho, Nam Soon Cho, Hak Suk Chung, Ki Nam Son, Man So Han, Sang Yong Pyun

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5 Citations (Scopus)

Abstract

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 Brönsted 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.

Original languageEnglish
Pages (from-to)1301-1304
Number of pages4
JournalBulletin of the Korean Chemical Society
Volume18
Issue number12
Publication statusPublished - 1997 Dec 1

ASJC Scopus subject areas

  • Chemistry(all)

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