15. Analytical Techniques:IR, NMR, Mass Spect
Mass Spect:Fragmentation
8:45 minutes
Problem 12g
Textbook Question
Textbook QuestionA laboratory student added 1-bromobutane to a flask containing dry ether and magnesium turnings. An exothermic reaction resulted, and the ether boiled vigorously for several minutes. Then she added acetone to the reaction mixture and the ether boiled even more vigorously. She added dilute acid to the mixture and separated the layers. She evaporated the ether layer, and distilled a liquid that boiled at 143 °C. GC–MS analysis of the distillate showed one major product with a few minor impurities. The mass spectrum of the major product is shown here. (b) Explain why the molecular ion is or is not visible in the mass spectrum, and show what ions are likely to be <
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