Question

Label each peak clearly and match up with each type of H on the 1H-NMR. In the IR spectrum label the functional groups.

Write one paragraph to show your reasoning for choosing the structure. Elaborate on characteristic peaks, patterns and splitting of signals.

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1.300 pm) 1.250 1.200 1.150 Unknown 50 PDF - 70 KB 4.150 4.100 4.000 4.000 pom (11) nun 50 44 ↑ Co High 4H Unknown 50 4.50 4.00 3.50 3. 00 2 .50 2.00 1.50 1.00 0.50 ppm (11)

Answer 1

IR spectra : for peak at is corresponding 2980 cm Penk at "GH"(alkame) duna pored gooup. 1450 cm' es correspondeng for f&_of(exter) functional group. for peak at 14.50 ant of corresponde 450 cmt % correspondong Pa 'C-H' bendeng peak at 1200-150 cm in correspondong for 'co' stretching frequency Structure of compard : "de ethyl Adspate". 'H wmr spedsa - - The so compond having four dettesent protons. NITR shows four different peaks.

carbon en _ 1-21 (6H, Triplet) 4.10 (4H, septet) 2.90 (AH, Triplet) -1.60 (4H, Triplet) - Carbon B protons having more chemical shift due to election withdrawing group (ester group).