反应详情

A methanol (5 mL) solution of N-(1-(tert-butyldimethylsilyloxy)-2-(6-octylbenzo[d]thiazol-2-yl)propan-2-yl)-2-methylpropane-2-sulfinamide (90 mg) and 4N HCl (0.325 mL, 1.3 mmol) was stirred at r.t. for 24 h. Then the mixture was extracted with EtOAc and purified by silica gel chromatography using PE/EA (1/2) to give product the title compound (11 mg, 26%). EDI-MS (M+1): 321. 1H NMR (300 MHz, CDCl3) δ 7.840 (d, 1H), 7.699 (s, 1H), 7.276 (d, 1H), 4.031 (d, 1H), 3.722 (d, 1H), 2.730 (t, 2H), 2.632 (b, 3H), 1.666 (t, 2H), 1.564 (s, 3H), 1.330-1.283 (m, 1011), 0.866 (t, 3H). HPLC: 96.9% (214 nm); 98.0% (254 nm).

1. extractionThen the mixture was extracted with EtOAc
2. custompurified by silica gel chromatography