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 (5.00 g, 13.04 mmol) with 2-methoxyphenylboronic acid (3.96 g, 26.09 mmol), dichlorobis(tri-o-tolylphosphine)-palladium(II) (0.532 g, 0.652 mmol), and potassium carbonate (4.5 g, 32.62 mmol) generally according to the procedure described for Intermediate 37 provided 3.63 g (68%) of (±)-[7-(2-methoxyphenyl)-2,3-dihydro-1-benzofuran-2-yl]methyl 4-methylbenzenesulfonate as a yellow solid. mp 151-153° C.; Anal. calcd. for C23H22O5S: C, 67.3; H, 5.4. Found: C, 66.95; H, 5.43.

Provenance & Evidence