一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
010-86108875
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 ANTHRAQUINONE-2-CARBOXYLIC ACID
117-78-2

ANTHRAQUINONE-2-CARBOXYLIC ACID synthesis

10synthesis methods
Anthraquinone-2-carboxylic acid is prepared from 4'-methylbenzophenone- 2-carboxylic acid by oxidation with potassium permanganate and ring closure with 5 % oleum.
-

Yield:117-78-2 95.3%

Reaction Conditions:

with dihydrogen peroxide;titanium(IV) oxide in acetonitrile at 25; for 5 h;Reagent/catalyst;Solvent;Temperature;

Steps:

3
5 g of 2-ethylanthraquinone was dissolved in 25 g of acetonitrile solvent, 0.25 g of the photocatalyst titanium dioxide (average particle size:20 nm) and 0.5 g of hydrogen peroxide were added thereto, followed by stirring for 5 hours of photocatalytic reaction. The photocatalytic reaction temperature was 25 ° C, 2-ethylanthraquinone is photocatalytic oxidation.The reaction was terminated and the catalyst was filtered off. The filtrate was evaporated under reduced pressure to remove the solvent and crystallized again to giveanthraquinone-2-carboxylic acid in a yield of 95.3%.

References:

Tianjin University;Zhang Tianyong;Li Bin CN105152924, 2017, B Location in patent:Paragraph 0018-0024; 0025-0031; 0032-0038; 0039-0045

FullText

ANTHRAQUINONE-2-CARBOXYLIC ACID Related Search:

离岛区| 隆化县| 新干县| 宜都市| 新竹市| 察隅县| 白水县| 长沙市| 弥勒县| 苍溪县| 镶黄旗| 手游| 阿城市| 漠河县| 临城县| 贡山| 独山县| 惠水县| 资源县| 成安县| 垣曲县| 达州市| 玉门市| 常熟市| 霍城县| 潍坊市| 于田县| 蒙自县| 香港 | 鄂尔多斯市| 澎湖县| 尤溪县| 兰州市| 漳州市| 习水县| 神木县| 云和县| 天峨县| 南通市| 宾阳县| 江阴市|