A mild procedure has been developed where α-(2-hydroxyphenyl)ethyl lactates (3), obtained via aluminium trichloride-promoted ortho-specific alkylation of lithium phenolates (1) with ethyl pyruvate (2), are reductively cyclized to racemic 3-methyl-2,3-dihydrobenzofuran-3-ols (4) in high yields and purity.
G. Casiraghi, G. Sartori, G. Casnati and F. Bigi, J. Chem. Soc., Perkin Trans. 1, 1983, 1649 DOI: 10.1039/P19830001649
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