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Novel dienes from α-ylidene and α-alkoxylidene lactones. Useful intermediates for the synthesis of benzofurans

1986; Royal Society of Chemistry; Issue: 16 Linguagem: Inglês

10.1039/c39860001230

2050-5639

Alistair Murray, Neil D. Murray, Robert G. B. Reid,

Asymmetric Synthesis and Catalysis

Novel dienes, formed by reaction of α-ylidene and α-alkoxylidene lactones with the lithium salt of acetonitrile, are readily converted into benzofuran precursors by a highly regioselective (and in the case of the former derivatives) a highly stereoselective Diels–Alder reaction.