成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook CAS DataBase List Deoxyarbutin
53936-56-4

Deoxyarbutin synthesis

7synthesis methods
Deoxyarbutin is a derivative of ?-arbutin, obtained by removal of hydroxyl groups from the glucose side-chain of ?-arbutin.
-

Yield:53936-56-4 100%

Reaction Conditions:

with 5%-palladium/activated carbon;hydrogen in ethanol at 20; under 3000.3 Torr; for 3 h;Autoclave;

Steps:

[Synthesis of Compound (9-3)]

To a 1-liter autoclave, 56.3 g (198 mmol) of the compound (9-2), 2.8 g of a catalyst (5% Pd/C), and 250 ml of ethanol were added. The resulting mixture was reacted at room temperature for 3 hours while the hydrogen pressure was maintained to be 0.4 MPa. After the catalyst had been removed by filtration, vacuum concentration was performed. Hereby, 38.5 g of the compound (9-3) was prepared (quantitative)

References:

US2017/260150,2017,A1 Location in patent:Paragraph 0146; 0148

Deoxyarbutin Related Search: