反应详情

A solution of 5-{(1R)-4-cyclohexyl-1-[2-(hydroxyamino)-2-oxoethyl]butyl}-1,2,4-oxadiazole-3-carboxamide (1.58 Kg, 4.86 mol) in tetrahydrofuran (15 litres) was heated to 40° C. and demineralised water (26 litres) was added to give a hazy solution. The mixture was allowed to cool to ambient temperature where it was stirred for 24 hours. The mixture was cooled to 5° C. and stirred for 1 hour. The precipitate was collected by filtration and dried in vacuo (38° C., 100 mbar) to afford the title compound as a colourless solid (1.37 Kg).

1. customto give a hazy solution
2. temperatureThe mixture was cooled to 5° C.
3. stirringstirred for 1 hour
4. filtrationThe precipitate was collected by filtration
5. customdried in vacuo (38° C., 100 mbar)