Sodium Hydroxide → HCID 44513410, compound

Participants

Reaction Steps

A solution of 492 mg (0.90 mmol) of ethyl 4-{[(3-methyl-2-{4-[(5-oxo-2-phenyl-5,6-dihydro-4H-1,3,4-oxadiazin-4-yl)methyl]phenyl}pentanoyl)amino]methyl}cyclohexanecarboxylate (Example 150A) in 8 ml of THF and 4.6 ml (4.6 mmol) of 1 N aqueous sodium hydroxide solution was stirred at 60° C. for four days. After the reaction had gone to completion, the THF was removed under reduced pressure and the reaction solution was diluted with water and then adjusted to pH 2 with 1 M hydrochloric acid. The precipitated solid was filtered off, washed with water and dried under reduced pressure at 45° C. overnight. This gave 343 mg (0.66 mmol, 73% of theory) of the title compound as a mixture of isomers.

Provenance & Evidence