Isovaleric Acid → HCID 13146230, compound

Participants

Reaction Steps

To a solution of 1.8 g of isovaleric acid in 50 ml of anhydrous pyridine, while being cooled in ice, was added 4.4 g of DCC. After stirring for 30 minutes, 5.0 g of 6-amidino-2-naphthol methanesulfonate was added to the mixture and further stirred overnight at room temperature. The precipitate was collected by filtration, washed with a small volume of pyridine, then with acetone, and dissolved in methanol at room temperature. The insolubles were collected by filtration and washed with a small volume of methanol. The filtrate and the washings were concentrated under reduced pressure and admixed with ethyl ether. The precipitated crystals were recrystallized from an ethanol-methanol (9:1) mixture to yield 2.0 g of colorless flaky crystals of 6-amidino-2-naphthyl isovalerate methanesulfonate.

Provenance & Evidence