Abstract

Timetable

Download Conference Program

Download All Abstracts

Zoom Access

Plenary Lectures Day1　Day2　Day3　Day4

MSSJ Award Lectures Day1

Oral Sessions Day2　Day3　Day4

Poster Presentations Day1　Day2　Day3　Day4

Late-Breaking Posters Day1

Luncheon Seminars Day2　Day3　Day4

Teatime Sessions Day3

Corporate Posters Day2　Day3　Day4

Corporate Program

Poster Presentations

Day 1, June 22（Sun.）　

Room P (Maesato East, Foyer, Ocean Wing)

• 1P-PM-12
• PDF

The [M-H]⁺ Formation of 4-Substituted-1-(methoxymethyl)benzene Derivatives under Positive Fast Atom Bombardment Ionization

(¹Mukogawa Women's Univ., ²Osaka Research Institute of Industrial Science and Technology)
^oShizuyo Horiyama¹, Motohiro Shizuma²

The appearance of the characteristic peak of the hydride-eliminated molecule [M-H]⁺ under a positive ion mode (positive) fast atom bombardment (FAB) ionization condition and liquid-assisted secondary ion mass spectrometry (LSIMS) conditions is known for some compounds and the mechanism of its formation has been investigated. In this study, we investigated the formation mechanism of the hydride-eliminated molecule [M-H]⁺ from 4-substituted-1-(methoxymethyl)benzene under a positive FAB ionization condition.
As 4-substituted-1-(methoxymethyl)benzene, 4-methoxy-1-(methoxymethyl)benzene (1), 4-methoxy-1-(methoxymethyl-d_{2-)benzene (1-d2) and 4-methoxy-1-(methoxymethyl-d3)benzene (1-d3) were selected to clarify the site of hydride elimination was the methylene of the 1-(methoxymethyl) moiety (Fig. 1). To examine the contribution of the 4-substituent to the hydride elimination reaction, the mass spectra of (methoxymethyl)benzene (2) and 4-nitro-1-(methoxymethyl)benzene (3) were used.}

---