Chlorotrimethylsilane → 3-(Benzylthio)-4-hydroxy-6-(4-hydroxyphenyl)pyran-2-one

Participants

Reaction Steps

The title compound was prepared by Method A using 4'-hydroxyacetophenone (0.722 g, 5.31 mmol), lithium bis(trimethylsilyl)amide (1.95 g, 11.6 mmol), chlorotrimethylsilane (1.48 mL, 11.6 mmol), THF (116 mL), and diethyl ester of [(phenylmethyl)thio]propanedioic acid (1.00 g, 3.54 mmol). m.p. dec. 204° C.; 1H NMR (250 MHz, DMSO-d6) δ3.96 (s, 2 H), 6.55 (s, 1 H), 6.88 (d, 2 H), 7.39 (m, 5 H), 7.63 (d, 2 H), 10.28 (s, 1 H), 11.75 (bs, 1 H).

Provenance & Evidence