I want to ask a question about the fragmentation of the $\ce{M_17}$ peak of Salicyclamide to a phenolic fragment.

I was reading the following paper giving a profile about salicyclamide.

I want to determine a mechanism that gives the following product from the fragmentation scheme:

Overall fragmentation scheme based from the mass spec analysis

I am however, unable to so far produce a mechanism that shows the scheme above.

The figure below shows the closest attempt I have made so far.

Attempt at a reasonable mechanism

I feel my attempt is incorrect since there is a net charge change.

What mistake am I making that can rectify my result and provide a reasonable suggestion for the mechanism involved?

I don't understand how this question can be voted for closure as it is "not relevant to chemistry". This is a clear phenomena given in a research paper and I wanted to discuss the mechanism(s) behind such findings that have been observed in the paper - as noted in the help centre under Questions relating to observed chemical phenomena.


I realised that for an $\ce{m/z = 92}$ you would need a $\ce{C6H4}$ ring with only an oxygen group attached. If a positive charge is present, this implies that there is a radical at position 2 ortho to the $\ce{C=O}$.

I revised my own mechanism below to suggest one possible route:

Possible mechanism.

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