Draw the structure of the a cleavage fragment(s) that the following compound will produce during...

Question:

Draw the structure of the {eq}\alpha {/eq} cleavage fragment(s) that the following compound will produce during mass spectrometry:

Mass Spectroscopy:

A compound's mass-to-charge ratio is found out in MS (mass spectroscopy). Here, the molecule is allowed to cleave and the abundance is analysed. This helps in understanding the unknown molecule completely.

Answer and Explanation:


In mass spectroscopy, there occurs an alpha cleavage of the molecule. In the given aromatic ketone, there are two alpha carbons. Cleavage can occur from both the carbon leaving behind a radical and the carbonyl compound.

Both the possible cleavages of 1-phenyl-butan-1-one is given in the picture below.


Learn more about this topic:

Mass Spectrometry & Infrared Spectroscopy: Alkyl & Carbonyl Groups
Mass Spectrometry & Infrared Spectroscopy: Alkyl & Carbonyl Groups

from AQA A-Level Chemistry: Practice and Study Guide

Chapter 17 / Lesson 1
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