An acylium ion is often produced as a fragment in the MS of which of the following class of organic compounds?

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Quizplus · Accepted Answer

Acylium ions are positively charged ions that have a carbon atom that bears a positive formal charge, a carbonyl group and a leaving group. They are often observed as a fragment in the mass spectrometry of ketones due to the ease with which the carbonyl group can be cleaved to form the acylium ion. The other compounds listed do not typically undergo fragmentation that leads to the formation of an acylium ion.

An Acylium Ion Is Often Produced as a Fragment in the MS