Mass Spectral Fragmentation of (S,S)-N,N′-Bis [1-(hydroxymethyl)alkyl]anthracene/Naphthalene-1,8-dic

来源 :高等学校化学研究(英文版) | 被引量 : 0次 | 上传用户:gwbn9
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The mass spectrometric fragmentation of(S,S)-N,N′-bis[1-(hydroxymethyl)alkyl]anthracene/naphthalene-1,8-dicarboxamides was investigated with the aid of mass-analyzed ion kinetic energy spectrometry and the elemental compositions of important fragment ions were determined by accurate mass measurement under electron impact ionization conditions. All the compounds could eliminate formaldehyde. The [M-CH2O] ions could also eliminate imine, aziridine, aziridinone,2-amonoalkan-1-ol, water, and other fragments. Several cyclizations were observed under electron impact ionization.
其他文献
A natural mineral, lindgrenite Cu3(MoO4)2(OH)2 , was synthesized from a mixture of sodium molybdate, copper sulfate, and morpholine in water under autogenous pr
用溶胀后的聚二甲基硅氧烷弹性印章进行毛细微模塑,得到了聚苯乙烯丙酮溶液的微四方点阵图案.较少的PS溶液滴加量会造成孤立不相连的微点阵图形.同时还获得了由于在收缩过程
The title compound has been prepared and characterized by elemental analysis, infrared spectra, NMR and thermal analyses, and its crystal structure was determin
AIM: Enterovirus 71 (EV71) has been implicated as the etiological agent responsible for the recent outbreaks of hand, foot and mouth disease associated with sev
In this note, we consider a Frémond model of shape memory alloys. Let us imagine a piece of a shape memory alloy which is fixed on one part of its boundary, an
Three new xanthones, 3, 6-dihydroxy-1, 2, 7-trimethoxyxanthone 1, 1, 3, 6-trihydroxy-2,7, 8-trimethoxyxanthone 2, and 3, 6-dihydroxy-1, 2, 7, 8-tetramethoxyxant
Liquid and solid particles in polar stratospheric clouds (PSCs) have been known to play a crucial role in the chemical loss of stratospheric ozone over the Anta
20世纪后半期,帝国主义时代的海外文明的冲突被国内的第二务战线所替代,这个第二条战线的特点就是文化的敌对和文明的冲突,而且是由于移民问题而引起并愈演愈烈的暴力性的敌
A microwave plasma torch(MPT) simultaneous spectrometer was used to study the spectral character and the matrix effect on alkali metal ions in solution. The mai