Acetic Acid → HCID 23388279, compound

Participants

Reaction Steps

Acetic acid (0.345 ml) and 2.04 ml of a 1 M tetra-n-butylammonium fluoride/THF solution were added to a solution of 255 mg of 4-nitrobenzyl (5R,6S)-2-(7-t-butyldimethylsilyloxyacetylimidazo[5,1 -b]thiazol-2-yl)-6-((1R)-1-hydroxyethyl)-1-carbapen-2-em-3-carboxylate in 8 ml of THF. The mixture was stirred at room temperature for 3 hr. Brine was added to the reaction solution. The mixture was adjusted to pH 8.1 by the addition of a saturated sodium hydrogencarbonate solution, and extracted twice with ethyl acetate. The organic layers were combined, washed twice with brine, and dried over anhydrous magnesium sulfate. The solvent was removed by distillation under the reduced pressure. Diethyl ether(5 ml) was added to the residue. The insoluble was collected by filtration to give 196 mg of 4-nitrobenzyl (5R,6S)-2-(7-hydroxyacetylimidazo[5,1-b]thiazol-2-yl)-6-((1R)-1-hydroxyethyl)-1-carbapen-2-em-3-carboxylate.

Provenance & Evidence