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.
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
Mingyu
M
Niu
Shuxia
S
Cao
Yong
Y
Ye
Zhen
Z
Zhang
Yufen
Y
Zhao
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