3-Bromo-4-methoxybenzaldehyde → 4-Methoxy-3-(thiophen-2-yl)benzaldehyde

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Ex-41A: 4-Methoxy-3-(thiophen-2-yl)-benzaldehyde was prepared from 3-bromo-4-methoxybenzaldehyde and thiophene-2-boronic acid in a similar manner as described in Ex-3A. Orange oil, 96% yield. 1H-NMR (CDCl3) δ 9.94 (s, 1H), 8.16 (d, J=1.8 Hz, 1H), 7.80 (dd, J=2.4, 8.4 Hz, 1H), 7.57 (dd, J=1.8, 3.6 Hz, 1H), 7.38 (d, J=5.1 Hz, 1H), 7.12 (dd, J=3.6, 5.1 Hz, 1H), 7.09 (d, J=8.4 Hz, 1H), 4.02 (s, 3H). HRMS m/z: calc. 218.0402, found 218.0406.

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