Lithium Hydroxide → HCID 15045771, compound

Participants

Reaction Steps

100 mg (2.42 mmole) of lithium hydroxide were added to a solution of 500 mg (1.21 mmole) of 3-[2(R)-benzyl-4-(N-cyclohexyl-N-methylamino)-4-oxobutyryl]-4(S)-isopropyl-2-oxazolidinone (which had been prepared by a similar procedure to those described in Preparations 12-14) in a mixture of 10 ml of tetrahydrofuran and 4 ml of water, and the mixture was stirred at room temperature for 5 hours. At the end of this time, the solvent was removed by distillation under reduced pressure, and the resulting residue was mixed with an aqueous solution of sodium bicarbonate and extracted with methylene chloride. The aqueous layer was adjusted to a pH value of 2 by the addition of an aqueous solution of citric acid and was then extracted with methylene chloride. The latter methylene chloride extract was dried over anhydrous magnesium sulfate and concentrated by distillation under reduced pressure, to afford 130 mg of the title compound as an amorphous product.

Provenance & Evidence