反应详情

A mixture of p-nitrobenzyl (5R,6S)-2-azido-6-[(R)-1-hydroxyethyl]-carbapen-2-em-3-carboxylate (75 mg, 0.2 mmol) and 2,3-dihydrofuran (0.25 ml) in anhydrous tetrahydrofuran (5 ml) containing excess sodium bicarbonate is kept at 4° C. for 1 week. The mixture is filtered and the filtrate evaporated under vacuum. The residue is purified by preparative thin layer chromatography on silica gel to afford p-nitrobenzyl (5R,6S)-6-[(R)-1-hydroxyethyl]-2-[4-(2-hydroxyethyl)-1,2,3-triazol-1-yl]carbapen-2-em-3-carboxylate.

1. waitis kept at 4° C. for 1 week
2. filtrationThe mixture is filtered
3. customthe filtrate evaporated under vacuum
4. customThe residue is purified by preparative thin layer chromatography on silica gel