反应详情

Prepared according to Procedure A using 2-amino-6-chlorobenzoic acid (2.0 g, 11.7 mmol) and SOCl2 (2.1 mL, 29.1 mmol) in benzene (60 mL), followed by o-anisidine (2.6 mL, 23.4 mmol) and CHCl3 (60 mL). The product was chromatographed in CH2Cl2 to provide 2.61 g of a dark yellow oil (81%). 1H NMR (CDCl3) δ: 8.53 (dd, J=1.7, 7.9 Hz, 1H); 8.39 (br s, 1H); 7.11 (dt, J=1.6, 7.8 Hz, 1H); 7.09 (t, J=8.1 Hz, 1H); 7.02 (dt, J=1.4, 7.8 Hz, 1H); 6.92 (dd, J=1.4, 8.0 Hz, 1H); 6.62 (dd, J=0.9, 8.2 Hz, 1H); 4.66 (br s, 2H); 3.87 (s, 3H). MS (ES): m/z 277.0 (M+).

1. customPrepared
2. customThe product was chromatographed in CH2Cl2