Mass spectra of substituted pyrazolo[1,5‐a]‐1,3,5‐triazines

Document Type

Article

Publication Date

1-1-1975

Department

Department of Chemistry; Department of Chemical Engineering

Abstract

High resolution electron impact mass spectrometric measurements have been made on twelve pyrazolo[1,5‐a]‐1,3,5‐triazines. Substituents attached to carbon atoms 2, 4, 7, and 8 were used to label the various fragments. Three major ions were observed (a) the molecular ion, (b) an ion corresponding to M‐RCN where R is the substituent attached to C‐4 and (c) an aryl cyclopropenyl cation which was observed in 7‐aryl derivatives. Intensities and accurate mass‐measurements are given for all ions having intensities exceeding 2% of the base peak. Nine of the twelve pyrazolo‐[1,5‐a]‐1,3,5‐triazines included in this study are described here for the first time.

Publisher's Statement

Copyright © 1975 Journal of Heterocyclic Chemistry. Publisher’s version of record: https://doi.org/10.1002/jhet.5570120630

Publication Title

Journal of Heterocyclic Chemistry

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