Sodium Hydroxide → HCID 12798027, compound

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Reaction Steps

A mixture of 10 g of 2-(4-azidophenyl)-3-methylbutanoic acid, benzyl ester, 25 ml of dioxane, 10 ml of water and 5.2 g of 50% sodium hydroxide was stirred and boiled under reflux for 30 hours. Most of the dioxane was evaporated in vacuum, and the oily residue diluted with water and butyl chloride, and acidified with 4 N HCl. The butyl chloride solution was washed with water (2 times) and saturated brine, dried (MgSO4), and evaporated to a residual oily solid. Stirring with hexane provided 4.3 g of 2-(4-azidophenyl)-3-methylbutanoic acid as a yellowish solid, m.p. 95°-97°. The infrared spectrum shows absorption peaks at 2120 cm-1 (azide) and 1715 cm-1 (carboxylic acid carbonyl).

Provenance & Evidence