Abstract
The synthesis of dialkoxyphosphorylcarboxamides, which is difficult to monitor by TLC, was investigated by ESI-MS and ESI-MSn. Their fragmentation pathways were rationalized and supported by tandem mass spectrometry. The characteristic ions in ESI-MS are useful for the structural determination of phosphorylcarboxamides.
Acknowledgments
The authors would like to thank the financial support from the National Natural Science Foundation of China (No. 20602032 and 20572061).