Sodium Hydroxide → HCID 23449138, compound

Participants

Reaction Steps

7-Aminomethylimidazo[5,1-b]thiazole (1.53 g) was dissolved in 50 ml of THF and 30 ml of water. A 1 N aqueous sodium hydroxide solution (12 ml) and 2.59 g of 4-nitrobenzyl chlorocarbonate were added under ice cooling to the solution. The mixture was allowed to react at the same temperature for 30 min. The reaction solution was extracted with 200 ml of ethyl acetate, followed by washing with 15% brine. The organic layer was dried over anhydrous magnesium sulfate, and concentrated under the reduced pressure to about 20 ml. The resultant crystal was collected by filtration, washed with 20 ml of ethyl acetate, and dried under the reduced pressure to give 2.26 g of 7-(4-nitrobenzyloxycarbonylamino)methylimidazo-[5,1-b]thiazole.

Provenance & Evidence