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When dissolved in
(a) Propose a structure for compound K.
(b) Explain why the NMR signal at
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ORGANIC CHEMISTRY-ETEXT REG ACCESS
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- The mass spectra of two very stable cycloalkanes both show a molecular ion peak at m/z = 98 . One spectrum shows a base peak at m/z = 69, the other shows a base peak at m/z = 83. Identify the cycloalkane.arrow_forward2-Methylpentanal and 4-methyl-2-pentanone are constitutional isomers with the molecular formula C,H,,0. Each shows a molecular ion peak in its mass spectrum at mlz 100. Spectrum A shows significant peaks at mlz 85, 58, 57, 43, and 42. Spectrum B shows significant peaks at mlz 71, 58, 57, 43, and 29. Assign each compound its correct spectrum. `H 2-Methylpentanal 4-Methyl-2-pentanonearrow_forwardWhich one of these four compounds would give a 13C NMR spectrum with only these three peaks, one at 210, one at 40 and one at 20? H3C OB OD 13C NMR delta (8) values C=O of ketones, aldehydes C=O of acids, esters, amides C=C and C=N C-X (where X = halogen, O) base position, alkyl C OC A OA CH3 H3C B CH3 H3C1 220-200 160-180 100-150 40-70 0 - 40 CH3 H₂C D CH3arrow_forward
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- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
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