Question

2. An organic compound E has the molecular formula C12Hi7NO gives spectroscopic data as follow: a) IR (KBR Disc): Amux 3296, 1642 cm b) 'H NMR (CDCl) : 6 0.93 (, 3H); 1.48 (d, 3H); 1.66 (sextet, 2HD) 2.15 (G, 2H); 5.14 (q, 1H):5.74 (broad, s, exchange with D20, 1H); 7.42-7.23 (m, 5H) i3C NMR (CDCl;) : δ 13.7 (q); 19.1 (t); 21.7 (q); 38.8 (t); 48.5 (d); 126.1 (d): 127.3 (d); 128.6 (d); 143.0 (s); 172.0 (s) c) d) MS: m/z 191; 148; 105; 86; 43 ta and Give peak assignments to account for the absorptions in the above spectroscopic da then propose a structure of compound E.