Question

2. CoH2 A 40 to 7.02 58, overlopped peaks, multiplee 2.57 2N. triplet 1.64 2, aextet o.94 3H, triplet t do oo Answer: deg do ocod og maido 11 10 9 6 4 3 HOP-00-052 ppm 00 s00 1000 8008 MB00 3000 BRVEMUNERl 819 74 743 696 1113 77 1095 62 1076 81 1060 74 66 1466 41 1453 18 2873 2D 1941 79 1601 81 1604 49 1564 74 77 3108 308S 52 4 1379 55 3064 43 3026 22 62 687 70 70 1341 565 62 84 1031 1258 3002 2960 10 490 57 66 1205 04 1178 909 74 1538 84 1496 888 77 481 2031

Answer 1

Molecular formula = C9H12

Sites of unsaturation = 4

1H NMR data:

7.40-7.02 (5H) presence of aromatic ring

2.57 (t, 2H) CH2 attached to CH2 and electron withdrawing group

1.64 (sextet, 2H) CH2 attached to CH3 and CH2

0.94 (t, 3H) CH3 attached to CH2

IR data

2900 cm-1 indicates aromatic C-H frequency

1400 cm-1 indicates aromatic C=C stretch

All above data indicates following structure

propylbenzene