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 sodium 4-oxovalerate
19856-23-6

sodium 4-oxovalerate synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

with sodium hydroxide in water;

Steps:

40

[0531] Example 40 2.52 g (0.02 mol) of levulinic acid and 47.57g methyl isobutyl ketone (MIBK) were added to a 250 mL beaker and mixed thoroughly until homogeneous. To this mixture, 1.75g of a 50/50 wt% sodium hydroxide solution was added. As soon as the sodium hydroxide was added, a white precipitate formed. A magnetic stir bar was placed into the beaker and put onto a stir plate to stir for a few minutes. With stirring, it appeared as though more precipitate formed. The precipitate was then filtered out using vacuum filtration and a 0.45μιη filter. A small amount of the precipitate was put into a GC vial and dissolved with water and then run on the HPLC to be analyzed. The analysis showed that the sodium salt of levulinic acid was synthesized.

References:

WO2014/189991,2014,A1 Location in patent:Paragraph 0531

sodium 4-oxovalerate Related Search: