Amino-catalyzed fragmentation characteristics of polyamides containing N-methylpyrrole and N-methylimidazole by electrospray negative ionization mass spectrometry.
Different negative fragmentations of synthesized polyamides containing N-methylpyrrole and N-methylimidazole were analyzed by electrospray ionization tandem mass spectrometry with low-energy collision-induced dissociation. An interesting rearrangement derived from amino catalysis of N-methylimidazole was observed. The observation is useful for the study of the correlations between the sequences of polyamides and their mass fragmentation pathways.
Niu
Mingyu
M
Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing 100084, China. nmy05@mails.tsinghua.edu.cn
Cao
Shuxia
S
Ye
Yong
Y
Zhang
Zhen
Z
Zhao
Yufen
Y
D002384:Catalysis; D007093:Imidazoles / Q000032:analysis* / Q000737:chemistry*; D009757:Nylons / Q000032:analysis* / Q000737:chemistry*; D011758:Pyrroles / Q000032:analysis* / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000379:methods*
D007093:Imidazoles; D009757:Nylons; D011758:Pyrroles; C096654:N-methylpyrrole; C018100:1-methylimidazole