Question

Define the molecule by its NMR spectroscopy. (Note: the tiny peak at ~7.2 ppm is from chloroform (solvent) Also, the molecule is aromatic structure and posseses a halide group and aldehyde group.

INDEX FREQUENCY PPM MEIGHT le: 310- exp e Sequence: $2pul ivent: cdc13 1993.9.967 121-4 183.69.946 1552.8 7.762 1544.97.723151,2 538.7 7.632 147.1 1530.1 7.6440.2 1451.57.25 2.3 26-0 C289.1K cury-200 loca lhost" lax. delay 1.000 sec 36.3 1-68 a.0 Ise 45.0 degrees tine 1.958 sec dth 3201.0 Hz ERVEMMİN200 . 04,2544 MHz A PROCESSING s1ze 1638 10 ppm 1.00 4.12 О. 12

Answer 1

From the fine structure of aromatic region it appears a quartet (which actually should be a doublet of doublet) pattern indicating that the aromatic ring is para - disubstituted

otherwise if meta substituted : we will observe singlet atleast

if ortho substituted : we will observe triplet atleast

so the structure will be

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