4-Toluenesulfonyl chloride → (7-Bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate

Participants

Reaction Steps

Treatment of (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methanol (49.0 g, 0.214 mol) with p-toluenesulfonyl chloride (44.9 g, 0.235 mol) generally according to the procedure described for Intermediate 10 gave 66.00 g (80%) (±)-(7-bromo-2,3-dihydro-1-benzofuran-2-yl)methyl 4-methylbenzenesulfonate as a white solid. Rf=0.44 (silica, ethyl acetate:hexanes 1:4); mp 120-122° C.; Anal. calcd. for C16H15BrO4S: C, 50.14; H, 3.94. Found: C, 48.47; H, 4.03.

Provenance & Evidence