反应详情

4-(4-Methanesulfonyl-phenoxy)-2,2-dimethyl-2,3-dihydro-benzofuran-6-carboxylic acid (15a) (3.35 g, 9.24 mmol) was dissolved in SOCl2 (50 mL) and DCM (20 mL) and stirred at room temperature for 2 hr. The volatiles were removed to give 3.3 g of a yellow solid (94% yield). 1H NMR (400 MHz, CHLOROFORM-d) δ 1.51 (s, 6 H) 2.91 (s, 2 H) 3.06 (s, 3 H) 7.10 (d, J=8.56 Hz, 2 H) 7.30 (s, 1 H) 7.35 (s, 1 H) 7.93 (d, J=8.56 Hz, 2 H).

1. customThe volatiles were removed