Question

lem 20 CHO, P MHr H NMR Spectrum in CDCI, Source: ASV На 30 20 10 o 1.15 1.10 2.5 24 4.25 2.01 2 10 3 5 ppm Chemical Shift (ppm) Multiplicity Partial structure Integration hnglel 4.25 2.00 CHy-CHEO .95 singlel 3.30 CH Z.45 2.01 quartel Cth-Ch mplet 3.12 CHI-CH Degrees of Unsaturation: Proposed Structure CHR-CHE-0--C Chem 210 Lab F19 5

C4H8O2

Answer 1

2 2 Given molemelar formula C4 H8O2 20 +2 +N-X-H Degree of unsaturation = (DOL)= Here is the number of Cambory N is the number of mitrogens x is the number of halogens (Fi, By, I) His the number of Hydrogay. DOU of C4 HBO2 = 2X4 +2 +0-0-8 = 8+2-8 - 10-8 Degree of unsaturation = 1 chemical shift I integration multiplicity partial structure in ppm 113 ppm 3 triplet Quartet 2.30ppm Broad singet 3.35ppm - 2 singlet -CH₂ ... The alsove pertical structures are given on the basis of given 'H-NMR spectra - the structue is cha-c _CH, OH triplet Quartet singht at 1.13 b at 2:5 at 4.25 - CH₂ altaded 1-cm-chi) to - CH₂ -ch, altached (Ech-cnto - CH₃ -OH L 4.25ppm artet sinfet broadsingbet - at 3.35 Degree of unsaturation proposed structure (Mac, RCH-OH Scanned with CamScanner