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 4-Acetylbenzoic acid
586-89-0

4-Acetylbenzoic acid synthesis

12synthesis methods
4-Acetylbenzoic acid is an intermediate for the preparation of curcumin analogs with antioxidant activity. It can be synthesized by the oxidation reaction of p-methylacetophenone and potassium permanganate to generate 4-acetylbenzoic acid, and then refluxing with anhydrous acetic acid for 1.5h.
-

Yield:586-89-0 92.1%

Reaction Conditions:

with carbon tetrabromide;oxygen in acetonitrile at 20; for 60 h;UV-irradiation;

Steps:

27 Example 27Compound 16
4-acetyltoluene (67 mg, 0.5 mmol),Carbon tetrabromide (16mg, 0.05mmol) was addedInto a reaction flask filled with oxygen,Plug in an oxygen balloon, and finally add 10ml of acetonitrile.Reaction at 400nm LED wavelength and room temperature for 60h,After the reaction, the solvent was distilled off under reduced pressure.Add excess 2mol / L sodium hydroxide solution for washing,Adjust the pH to about 10 ~ 11,The aqueous phase was extracted multiple times with ethyl acetate,Then add 2mol / L of dilute hydrochloric acid to the water phase,Adjust the pH to 1-2,The aqueous phase was extracted again with ethyl acetate several times,Evaporate the ethyl acetate and dry,That gives compound 16,The yield was 92.1%.

References:

Zhejiang University of Technology;Li Xiaoqing;Zheng Kun;Xu Xiangsheng CN110563571, 2019, A Location in patent:Paragraph 0158; 0159; 0160; 0161

FullText

13329-40-3 Synthesis
4'-Iodoacetophenone

13329-40-3
279 suppliers
$6.00/5g

201230-82-2 Synthesis
carbon monoxide

201230-82-2
1 suppliers
inquiry

4-Acetylbenzoic acid Related Search:

泰安市| 育儿| 临夏县| 隆德县| 岳阳县| 盐亭县| 米林县| 五原县| 商水县| 寿宁县| 西充县| 荥经县| 峡江县| 建始县| 大足县| 南岸区| 阳朔县| 肇庆市| 江陵县| 寿阳县| 秭归县| 博野县| 巴林左旗| 青海省| 岐山县| 嫩江县| 富裕县| 洪江市| 沙坪坝区| 长葛市| 天水市| 静海县| 鄄城县| 龙口市| 清水河县| 孟津县| 西畴县| 垣曲县| 秭归县| 锡林浩特市| 行唐县|