反应详情

A solution of TEA (0.18 mL, 1.33 mmol) in MeCN (5 mL) was added dropwise to a mixture of 2-tert-butyl-4-chloro-5-phenylisothiazol-3(2H)-one 1,1-dioxide (0.20 g, 0.67 mmol) and (3-bromopropyl)amine hydrobromide (0.146 g, 0.67 mmol) in MeCN (3 mL). After 45 mins a solution of (3-bromopropyl)amine hydrobromide (0.073 g, 0.33 mmol) and TEA (0.093 mL, 0.66 mmol) in MeCN (5 mL) was added dropwise to the reaction mixture. After 3 h, (3-bromopropyl)amine hydrobromide (0.073 g, 0.33 mmol) and TEA (0.093 mL, 0.66 mmol) was added to the reaction mixture. After 17 h the solvent was evaporated and the residue was purified by silica gel column chromatography using 10-20% EtOAc in petroleum ether mixture as eluant, to yield the title compound (0.112 g, 42%) as a solid; 1H NMR (500 MHz, CDCl3): δ 7.69-7.50 (m, 2H), 7.50-7.44 (m, 3H), 5.32 (t, 1H), 3.18 (t, 3H), 3.10-3.04 (m, 2H), 1.90-1.78 (m, 2H), 1.76 (s, 9H); Mass Spectrum M+H+ 403.

1. customAfter 17 h the solvent was evaporated
2. customthe residue was purified by silica gel column chromatography