反应详情

3-(Hydroxymethyl)-N,N-bis{[2-(trimethylsilyl)ethoxy]methyl}benzenesulfonamide (0.735 g) was stirred with ice-water cooling in dichloromethane (32 ml) under nitrogen and carbon tetrabromide (0.962 g) and triphenylphosphine (0.646 g) were added successively. After 5 min the cooling bath was removed and the mixture was stirred at 21° for 4 h. The mixture was poured onto an SPE silica cartridge (10 g). The cartridge was eluted with dichloromethane to give the title compound (0.21 g) LCMS RT=4.31 min.

1. customAfter 5 min the cooling bath was removed
2. additionThe mixture was poured onto an SPE silica cartridge (10 g)
3. washThe cartridge was eluted with dichloromethane