Potassium Carbonate → (+)-[7-(2-Methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate

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Reaction Steps

Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate (0.5 g, 1.31 mmol) with 2-methoxyphenylboronic acid (0.297 g, 1.96 mmol), dichlorobis(tri-o-tolylphosphine)palladium(II) (0.051 g, 0.065 mmol), and potassium carbonate (0.45 g, 3.26 mmol) generally according to the procedure described for Intermediate 37 gave 0.399 g (74%) of (±)-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a tan solid. mp 100-103° C.; Anal. calcd. for C23H22O5S: C, 67.3; H, 5.4. Found: C, 66.95; H, 5.43.

Provenance & Evidence