反应详情

To a mixture of sodium azide (34.01 mg, 0.0005232 mol) in ACN (0.3 mL, 0.005 mol) was added silicon(IV) chloride (0.105 mmol, 0.000105 mol) in DCM (0.1 mL, 0.002 mol) and the mixture was stirred for 30 min. 4-cyano-3-(2,4-dichlorophenyl)-5-morpholinothiophene-2-carboxamide (20.0 mg, 0.0000523 mol) was added to the above mixture, followed by sodium azide (0.0340 g, 0.000523 mol) and silicon(IV) chloride (0.16 mmol, 0.00016 mol) in DCM (0.16 mL, 0.0025 mol) and the mixture was irradiated in microwave at 160° C. for 30 min. The reaction was evaporated and purified by column chromatography to afford 4-(2,4-dichlorophenyl)-2-morpholino-5-(1H-tetrazol-5-yl)thiophene-3-carbonitrile (11.6 mg, 54.4%). LCMS: (FA) ES+ 407.09, ES− 405.20; 1H NMR (300 MHz, d1-chloroform) δ: 7.60 (d, 1H), 7.42 (dd, 1H), 7.30 (d, 1H), 3.90-3.85 (m, 4H), 3.72-3.63 (m, 4H).

1. customthe mixture was irradiated in microwave at 160° C. for 30 min
2. customThe reaction was evaporated
3. custompurified by column chromatography