4-Acetylbenzoic Acid → 4-[3E-(4-Methoxy-3-thiophen-2-yl-phenyl)-acryloyl]-benzoic acid

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Reaction Steps

The title compound was prepared by condensing 4-methoxy-3-(thiophen-2-yl)-benzaldehyde (Ex-41A) and 4-acetylbenzoic acid in a similar manner as described in Ex-3. Yellow solid, mp 219–220° C., 71% yield. 1H-NMR (DMSO-D6) δ 13.36 (br s, 1H), 8.25–8.31 (m, 3H), 8.11 (d, J=8 Hz, 2H), 7.85–7.98 (m, 3H), 7.78–7.80 (m, 1H), 7.61 (d, J=5 Hz, 1H), 7.25 (d, J=9 Hz, 1H), 7.17 (dd, J=4, 6 Hz, 1H), 3.99 (s, 3H). HRMS m/z=calc. 365.0848, found 365.0833.

Provenance & Evidence