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. Author manuscript; available in PMC: 2021 Feb 10.
Published in final edited form as: Mass Spectrom Rev. 2019 Sep 6;39(4):336–370. doi: 10.1002/mas.21601

Figure 13.

Figure 13.

Katritzky reactions between 2,4,6-triphenyl pyrylium cation and mono-, di-amines monitored by PS MS. (Reprinted with permission from Yan et al., 2013, copyright 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)