Wu Anxin, Wang Mingyi, Gan Yonghong and Pan Xinfu
J. Chem. Res. (S), 1998, 136-137
DOI:
10.1039/A700131B,
Paper
3,4-Dimethyl-2-piperonyl-5-veratrylfuran has been synthesized starting from vanillin and piperonal by employing as the key steps cross-coupling of a bromo β-oxo ester and the sodium salt of another β-oxo ester, affording a 1,4-diketone, and selective reductive removal of an allylic hydroxy group by palladium oxide.