反应详情

The title compound (2030 mg, 49%) was prepared from 5-bromo-2-(2-iodoethyl)pyridine (3571 mg, 11.5 mmol) and (+/−)-2-ethanesulfonyl-propionic acid ethyl ester (2270 mg, 12.6 mmol) by a procedure analogous to that described for the preparation of compound (1) from Preparation 2, Step 2, i.e. (+/−)-ethyl 4-(4-bromophenyl)-2-methyl-2-(methylsulfonyl)butanoate. MS (LC MS) m/z 364.0 (M+1). 1H NMR (400 MHz, CHLOROFORM-d) δ ppm 1.31 (t, J=7.03 Hz, 3H) 1.68 (s, 3H) 2.28-2.39 (m, 1H) 2.54-2.76 (m, 2H) 2.83-2.95 (m, 1H) 3.05 (s, 3H) 4.24 (q, J=7.29 Hz, 2H) 7.05 (d, J=8.59 Hz, 1H) 7.71 (dd, J=8.20, 2.34 Hz, 1H) 8.56 (d, J=1.95 Hz, 1H).