Phthalimide potassium salt → HCID 90295627, compound

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Reaction Steps

Using compound 4-((3R,3 aS)-3-((methylsulfonyloxy)methyl)-1-oxo-1,3,3a,4-tetrahydrobenzo[b]oxazolo[3,4-d][1,4]oxazin-7-yl)-3-oxopiperazin-1-carboxylic acid benzyl ester (0.916 g, 1.725 mmol), and phthalimide potassium (0.479 g, 2.558 mmol) as starting materials, preparation following the method as described in Example 1 (d) afforded white solid 0.794 g, yield: 79.1%.

Provenance & Evidence