The synthesis of the linear coumarin demethylsuberosin (1) is described via regioselective boron trifluoride–diethyl ether-catalysed Claisen rearrangement of methyl 2′-benzyloxy-4′-(1,1-dimethylallyloxy)cinnamate (4c).
N. Cairns, L. M. Harwood and D. P. Astles, J. Chem. Soc., Chem. Commun., 1986, 750 DOI: 10.1039/C39860000750
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