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

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

* Honorary professors

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	1301-1304
Number of pages	4
Journal	Bulletin of the Korean Chemical Society
Volume	18
Issue number	12
Publication status	Published - 1997

ASJC Scopus subject areas

General Chemistry

Cite this

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

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 Br{\"o}nsted 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.",

author = "Cho, {Bong Rae} and Cho, {Nam Soon} and Chung, {Hak Suk} and Son, {Ki Nam} and Han, {Man So} and Pyun, {Sang Yong}",

year = "1997",

language = "English",

volume = "18",

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journal = "Bulletin of the Korean Chemical Society",

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T1 - Mechanism of Elimination from (E)-2,4-Dinitrobenzaldehyde O-pivaloyloxime Promoted by R2NH/R2NH2+ Buffer in 70% MeCN(aq)

AU - Cho, Bong Rae

AU - Cho, Nam Soon

AU - Chung, Hak Suk

AU - Son, Ki Nam

AU - Han, Man So

AU - Pyun, Sang Yong

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

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SN - 0253-2964

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SP - 1301

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JO - Bulletin of the Korean Chemical Society

JF - Bulletin of the Korean Chemical Society

IS - 12

ER -

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

Abstract

ASJC Scopus subject areas

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