Part II. two unbranched ketone have molecular formulla (C8H100). El-ms showed thatboth of themhave a molecular ion peak at m/2 =128. However ketone(A) has a fragment peak at m/2 = 99 and 72while ketone (B) snowed afragment peak at m/2 = 113 and 58.9) Propose the most plausible structures for both ketonesb) Explain how you arrived at your conclusion by drawing theStructures of the distinguishing fragments for each ketone,including their fragmentation mechanisms.

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Answered: Part II. two unbranched ketone have…

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter12: Structure Determination: Mass Spectrometry And Infrared Spectroscopy

Section12.SE: Something Extra

Problem 41AP: The mass spectrum (a) and the infrared spectrum (b) of an unknown hydrocarbon are shown. Propose as...

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[References] The mass spectrum of octanoic acid, CH3(CH2)6COOH, exhibits a series of peaks differing by 14 amu at m/z 29, 43, 57, 71, 85, and 99. Draw the structure of the fragment resulting in the m/z 71 peak. • You do not have to consider stereochemistry. • You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one. • Do not use the square brackets tool in your answer. opy aste H,C earch 84%
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