Calcium Acetate → L-Tagatose

To a 25 ml Erlenmeyer flask, equipped with a magnetic stirrer, was added 0.5 g L-galactose, 5 ml water, 0.2 g calcium hydroxide, and 22 mg calcium acetate. The mixture was stirred. After 2 hours, the solution was filtered to collect the calcium hydroxide-L-tagatose complex that had formed. The sticky complex was resuspended in 5 mL of H2O, and CO2 was bubbled through the slurry until the pH was below 7. The solution, after filtering off the calcium carbonate, was deionized as in Example 1 and concentrated in vacuo to a syrup which, after seeding with a few L-tagatose crystals, provided 0.22 of pure L-tagatose, a 44% yield.

1. customTo a 25 ml Erlenmeyer flask, equipped with a magnetic stirrer
2. filtrationthe solution was filtered
3. customto collect the calcium hydroxide-L-tagatose complex that
4. customhad formed
5. customCO2 was bubbled through the slurry until the pH was below 7
6. filtrationThe solution, after filtering off the calcium carbonate
7. concentrationconcentrated in vacuo to a syrup which

ORD 기록

ord-a598b9af029949a4bf39712d99ba6c6c

출처 데이터셋

uspto-grants-1992_01

DOI

10.6084/m9.figshare.5104873.v1

특허 번호

US05078796