反应详情

A 50 mL three-necked flask under nitrogen was charged with (S)-methyl 1-(1,3-benzodioxol-5-yl)-3-[(fluorosulfonyl)oxy]-5-propoxy-1H-indene-2-carboxylate (prepared as described in Example 1 (vii)) (500 mg, 1.07 mmol), (4-methoxy-2-[2-(phenylmethoxy)ethoxy]phenyl]boronic acid (Compound (v)) (330 mg, 1.09 mmol), toluene (15 mL), EtOH (1 mL), and Pd(dppf)Cl2 catalyst (24 mg, 0.033 mmol). The mixture was stirred for 0.5 h at room temperature followed by the addition of 1.3 M K2CO3 solution (1.0 mL, 1.3 mmol) and heated to 70° C. for 45 min. The mixture was cooled to room temperature, charged with Norit A charcoal (5 g) and filtered through celite. The filtrate was then concentrated in vacuo affording (S)-methyl 1-(1,3-benzodioxol-5-yl)-3-[4-methoxy-2-[2-(phenylmethoxy)ethoxy]phenyl]-5-propoxy-1H-indene-2-carboxylate as a yellow gum (640 mg, 98% yield).

1. temperatureheated to 70° C. for 45 min
2. temperatureThe mixture was cooled to room temperature
3. filtrationfiltered through celite
4. concentrationThe filtrate was then concentrated in vacuo