HYDROGEN TRANSFER IN THE RETRO DIELS-ALDER FRAGMENTATION OF OXYGEN-CONTAINING HETEROCYCLIC-COMPOUNDS .2. CHROMONES

被引：11

作者：

EGUCHI, S

机构：

[1] Department of Chemistry, Faculty of Science, Hiroshima University, Hiroshima, 730, Higashisenda‐Machi

来源：

ORGANIC MASS SPECTROMETRY | 1979年 / 14卷 / 07期

关键词：

D O I：

10.1002/oms.1210140702

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Mass Spectra of unsubstituted, 2‐methyl‐, 3‐methyl and 2,3‐dimethylchromones were examined. These compounds showed [RDA]+˙ and [RDA + H]+ ions as characteristc ions, together with [MH]+,[MCO]+˙,[MCHO]+ and [RDACO]+˙ ions. Based on deuterium labelling experiments and measurement of metastable peaks by the ion kinetic energy defocusing technique, the origin of transferred hydrogen in the [RDA + H]+ ion was clarified. The mechanism of the [RDA + H]+ ion formation is discussed. Copyright © 1979 Heyden & Son Ltd

引用

页码：345 / 349

页数：5

共 16 条

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