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 Ketoprofen
22071-15-4

Ketoprofen synthesis

11synthesis methods
Ketoprofen, 2-(3-benzoyl)propionic acid (3.2.37), is synthesized from 3-methylbenzophenone, which undergoes bromination and forms 3-bromo-methylbenzophenone (3.2.33). The reduction of the resulting product by sodium cyanide gives 3-cyanomethylbenzophenone (3.2.34), which is reacted with the diethyl ester of carbonic acid in the presence of sodium ethoxide. The resulting cyanoacetic ester derivative (3.2.25) is alkylated by methyl iodide and the resulting product (3.2.36) undergoes acidic hydrolysis, forming ketoprofen (3.2.37) [104–106].

42872-30-0 Synthesis
2-(3-Benzoylphenyl)propionitrile

42872-30-0
271 suppliers
$15.00/1g

-

Yield:22071-15-4 92.8%

Reaction Conditions:

with sulfuric acid for 7 h;Reflux;

Steps:

6 Example 6: Preparation of a compound of formula VII

Add a compound of formula VI (10g, 0.042mol) and an 80% sulfuric acid solution (10.3g, 0.084mol) to a 250ml reaction bottle, and start heating to reflux. After holding the reaction for 7 hours, take a sample and test. After the raw materials disappear, the temperature begins to fall. material. After stirring at 7 ° C for 1 hour, suction filtration, washing with a small amount of water, and drying, 10.6 g of a compound of formula VII was obtained, with an HPLC content of 94.6% and a yield of 92.8%.

References:

CN110857269,2020,A Location in patent:Paragraph 0193-0195

Ketoprofen Related Search:

綦江县| 额尔古纳市| 神农架林区| 镇赉县| 合水县| 芮城县| 芮城县| 射阳县| 芦溪县| 凤城市| 海伦市| 东乡县| 阳泉市| 克什克腾旗| 西乡县| 南部县| 海伦市| 邢台市| 吉首市| 灌南县| 铜梁县| 柯坪县| 宝应县| 潼关县| 五原县| 阳谷县| 江油市| 湟中县| 凌源市| 绥江县| 喀喇沁旗| 察雅县| 比如县| 宣武区| 东台市| 巴塘县| 钟山县| 冕宁县| 平潭县| 嘉荫县| 黔东|