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 2,6-DICHLORO-1,4-BENZOQUINONE
697-91-6

2,6-DICHLORO-1,4-BENZOQUINONE synthesis

13synthesis methods
-

Yield:697-91-6 99.4%

Reaction Conditions:

with oxygen;nitric acid in methanol at 20; for 2 h;Sealed tube;

Steps:

1-2 Example 1: Preparation of chlorinated p-benzoquinone.
General procedure: In a 1000 mL closed four-neck reaction flask, 600 g of methanol and 197.5 g of 2,4,6-trichlorophenol were added.Stir the solution, then add 200 mL of 5% dilute nitric acid in a 2000 mL sealed four-neck reaction flask.Start to add the dissolved 2,4,6-trichlorophenol solution, pass 2 atm of oxygen, stir the temperature control at 20 ° C, and react for 2 h.After completion of the reaction, 167 g of chlorinated-p-benzoquinone was obtained by filtration, and the yield was 93.3%.

References:

Shaoxing Shangyu Yanjiang Biological Technology Co., Ltd.;Xu Yinji CN109942388, 2019, A Location in patent:Paragraph 0030-0032

FullText

2,6-DICHLORO-1,4-BENZOQUINONE Related Search: