MASS SPECTROMETRY IN STRUCTURAL AND STEREOCHEMICAL PROBLEMS .144. UNUSUAL FRAGMENTATIONS IN LOW-VOLTAGE SPECTRA OF ALIPHATIC KETONES

被引：88

作者：

CARPENTER, W

DUFFIELD, AM

DJERASSI, C

机构：

[1] Department of Chemistry, Stanford University, Stanford

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 1968年 / 90卷 / 01期

关键词：

D O I：

10.1021/ja01003a028

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An examination of the mass spectra of isotopically labeled aliphatic ketones at low voltage (10 ev) has shown that deuterium scrambling occurs among carbon atoms of the aliphatic chains. The site specificity of the “protonated McLafferty rearrangement” ion has been determined and an interesting reciprocal hydrogen-transfer process has been shown to operate in the genesis of the peak at m/e 71 in the spectrum of 2-octanone. An ion corresponding to the McLafferty rearrangement plus 14 mass units has been found to be an important fragmentation of aliphatic ketones at low voltage. © 1968, American Chemical Society. All rights reserved.

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页码：160 / +

页数：1

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