6-CHLORO-4-CHLOROMETHYL-7-HYDROXY-CHROMEN-2-ONE → HCID 18410354, compound

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Reaction Steps

This compound was prepared by the same method as compound 4, starting with compound 13 rather than compound 12, to yield 34.5 mg (73.3 mmol, 30% yield) of compound 6 as an oil. 1H NMR (CDCl3+5% CD3OD) δ 7.88 (1H, s), 5.42 (2H, s), 2.11 (3H, s); MS (ES, negative) 466.9, 468.9, 470.9 and 472.9; UV (KMOPS, pH 7.2) λmax (ε) 397 nm (15,900 M−1cm−1).

Provenance & Evidence