Treatment of butan-2-one (CH3COCH2CH3) with strong base followed byCH3I forms a compound Q, which gives a molecular ion in its massspectrum at 86. The IR (> 1500 cm−1 only) and 1H NMR spectra of Q aregiven below. What is the structure of Q? 100H NMR of Q6 H3 HIR of Q501H642400035003000250020001500ppmWavenumber (cm-)% Transmittance

The product (Q) formed from the reaction of 2-butanone with CH3I in the presence of a base is to be…

Answered: 100 H NMR of Q 6 H 3 H IR of Q 50 1H 6…

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100 H NMR of Q 6 H 3 H IR of Q 50 1H 6 4 2 4000 3500 3000 2500 2000 1500 ppm Wavenumber (cm-) % Transmittance

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter19: Nuclear Magnetic Resonance Spectroscopy

Section: Chapter Questions

Problem 19.8QAP

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Concept explainers

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.

Question

Treatment of butan-2-one (CH₃COCH₂CH₃) with strong base followed by
CH₃I forms a compound Q, which gives a molecular ion in its mass
spectrum at 86. The IR (> 1500 cm⁻¹ only) and ¹H NMR spectra of Q are
given below. What is the structure of Q?

100
H NMR of Q
6 H
3 H
IR of Q
50
1H
6
4
2
4000
3500
3000
2500
2000
1500
ppm
Wavenumber (cm-)
% Transmittance

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