Benzene, [1-[(trimethylsilyl)oxy]ethenyl]- → 4-Hydroxy-3-(phenylpropylthio)-6-phenylpyran-2-one

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The title compound was prepared by Method A using 1-Phenyl-1-(trimethylsilyloxy)ethylene (0.922 g, 4.83 mmol) and diethyl ester of [(3-phenylpropyl)thio]propanedioic acid (1.00 g, 3.22 mmol). m.p. 114-116° C.; 1H NMR (400 MHz, DMSO-d6) δ1.74 (m, 2 H), 2.71 (m, 4 H), 6.82 (m, 1 H), 7.16 (m, 3 H), 7.25 (m, 2 H), 7.54 (m, 3 H), 7.81 (m, 2 H), 11.95 (bs, 1 H).

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