Raspberry ketone .Your aunt will teach you nmr

Raspberry ketone (4-(4-hydroxyphenyl) butan-2-one; RK), one of the major aromatic compounds of raspberry, is widely used in perfumery, in cosmetics, and as a flavoring agent in foodstuffs








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RK: colorless needles crystal; m.p. 82–84 °C; 


ESI/MS m/z: 163 [M-H]+; 



1H-NMR (CDCl3, 500 MHz) δ: 2.14 (3H, s, H-1), 2.74 (2H, t, J = 7.5 Hz, H-3), 2.82 (2H, t, J = 7.5 Hz, H-4), 6.75 (2H, d, J = 8.5 Hz, H-3′,5′), 7.04 (2H, d, J = 8.5 Hz, H-2′,6′); 

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13C-NMR (CDCl3, 125 MHz) δ: 209.0 (C-2, C=O), 154.0 (C-4′), 132.8 (C-1′), 129.4 (C-2′, 6′), 115.3 (C-3′, 5′), 45.4 (C-3), 30.1 (C-4), 28.9 (C-1).


 - See more at: http://www.mdpi.com/1422-0067/12/8/4819/htm

Nechepurenk, V; Polovinka, NP; Sal¢nikova, OI; Pokrovskii, LM; Komarova, NI; Salakhutdinov, NF; Nechepurenk, SB. Compounds of the ehtylacetate extract of Hedysarum theinum roots. Chem. Nat. Compd 2007, 43, 5–9






NMR PREDICTIONS

H-NMR spectral analysis

CAS NO. 5471-51-2, 4-(4-Hydroxyphenyl)-2-butanone H-NMR spectral analysis

C-NMR spectral analysis

CAS NO. 5471-51-2, 4-(4-Hydroxyphenyl)-2-butanone C-NMR spectral analysis

More 4-(4-Hydroxyphenyl)-2-butanone NMR spectra of reference

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