Sodium Hydroxide → HCID 18626235, compound

Participants

Reaction Steps

1N Sodium hydroxide (3 mL) was added to (2-methoxy-5-phenylcarbamoyl-phenylcarbamoyl)-acetic acid phenylmethyl ester from Example 252 (1.29 g, 3.1 mmol) in methanol (80 mL) and the reaction mixture boiled until most of the solvent was gone. Additional 1N sodium hydroxide (4 mL) and methanol (80 mL) were added and the mixture again concentrated to near dryness. Ethyl acetate (100 mL), water (100 mL), and 1N HCl (10 mL) were added, the layers separated, the organic layer washed with brine (50 mL), dried over magnesium sulfate, and concentrated to an oil. Trituration in hexanes/ethyl acetate (4:1) afforded the product (0.826 g); m.p. 173-175° C.

Provenance & Evidence