Helvetica Chimica Acta – Vol. 89 (2006)
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Ethyl (2Z)-2-(Bromomethyl)-3-(4-ethylphenyl)prop-2-enoate (2j). Semisolid. 1H-NMR (200 MHz,
CDCl3): 7.76 (s, 1 H); 7.49 (d, J=8.0, 2 H); 7.28 (d, J=8.0, 2 H); 4.38 (s, 2 H); 4.30 (q, J=7.0, 2 H);
2.70 (q, J=7.0, 2 H); 1.39 (t, J=7.0, 3 H); 1.28 (t, J=7.0, 3 H). EI-MS: 298, 296 (M+). Anal. calc. for
C14H17BrO2: C 56.57, H 5.72; found: C 56.64, H 5.63.
Ethyl (2Z)-2-(Bromomethyl)-3-[4-(1-methylethyl)phenyl]prop-2-enoate (2k). Semisolid. 1H-NMR
(200 MHz, CDCl3): 7.75 (s, 1 H); 7.52 (d, J=8.0, 2 H); 7.30 (d, J=8.0, 2 H); 4.39 (s, 2 H); 4.32 (q,
J=7.0, 2 H); 2.93 (m, 1 H); 1.40 (t, J=7.0, 3 H); 1.27 (d, J=7.0, 6 H). EI-MS: 312, 310 (M+). Anal.
calc. for C15H19BrO2: C 57.88, H 6.11; found: C 57.94, H 6.08.
(2E)-2-(Bromomethyl)-3-(3-nitrophenyl)prop-2-enenitrile (2o). Semisolid. 1H-NMR (200 MHz,
CDCl3): 8.46 (d, J=2.0, 1 H); 8.33 (dd, J=8.0, 2.0, 1 H); 8.28 (dd, J=8.0, 2.0, 1 H); 7.68 (dd, J=8.0,
2.0, 1 H); 7.21 (s, 1 H), 4.20 (s, 2 H). EI-MS: 268, 266 (M+). Anal. calc. for C10H7BrN2O2: C 44.94, H
2.62; found: C 44.72, H 2.64.
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Received May 29, 2006