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Helvetica Chimica Acta – Vol. 89 (2006)
3-(3,4-Dimethoxyphenyl)propanoic Acid (18b) [6l]: M.p. 95–988. 1H-NMR (CDCl3, 300 MHz): 7.03
(d, J=8.07, 1 H); 6.41 (s, 1 H); 6.39 (d, J=8.07, 1 H); 3.75 (s, 6 H); 2.85 (t, J=7.67, 2 H); 2.59 (t, J=7.67, 2
H). 13C-NMR (CDCl3, 75.4 MHz): 176.8; 147.2; 144.3; 132.9; 120.8; 115.0; 114.2; 55.8; 37.2; 30.6.
1
3-Phenylpropanenitrile (19b) [5][6q][10]: Liquid. H-NMR (CDCl3, 300 MHz): 7.26 (d, J=6.86, 2
H); 7.16–7.11 (m, 3 H); 2.89 (t, J=7.27, 2 H); 2.55 (t, J=7.27, 2 H). 13C-NMR (CDCl3, 75.4 MHz):
138.1; 129.1; 128.3; 127.2; 119.2; 31.5; 19.3.
3-Phenylpropanamide (20b) [10]: M.p. 99–1018. 1H-NMR (CDCl3, 300 MHz): 7.22 (d, J=6.86, 2 H);
7.15–7.08 (m, 3 H); 2.92 (t, J=7.67, 2 H); 2.48 (t, J=7.67, 2 H). 13C-NMR (CDCl3, 75.4 MHz): 174.8;
142.3; 128.6; 128.3; 126.3; 37.5; 31.4.
Methyl 3-(4-Acetoxy-3-methoxyphenyl)propanoate (21b) [21]: Liquid. 1H-NMR (CDCl3, 300 MHz):
6.98 (d, J=6.46, 1 H); 6.63–6.57 (m, 2 H); 3.76 (s, 3 H); 3.69 (s, 3 H); 2.88 (t, J=7.67, 2 H); 2.59 (t,
J=7.67, 2 H); 2.05 (s, 3 H). 13C-NMR (CDCl3, 75.4 MHz): 172.8; 168.3; 154.9; 139.4; 136.7; 123.6;
120.8; 113.7; 55.7; 51.7; 35.2; 31.4; 17.2.
3,4-Dihydrocoumarin (=3,4-Dihydro-2H-1-benzopyran-2-one; 22b) [7d]: Liquid. 1H-NMR (CDCl3,
300 MHz): 7.20–7.14 (m, 2 H); 7.05–7.01 (m, 1 H); 6.96 (d, J=7.67, 1 H); 2.95 (t, J=7.27, 2 H); 2.73 (t,
J=7.27, 2 H); 13C-NMR (CDCl3, 75.4 MHz): 169.0; 152.1; 128.3; 128.0; 124.5; 122.9; 116.9; 29.2; 23.6.
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