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 2-Fluorobenzoic acid
445-29-4

2-Fluorobenzoic acid synthesis

12synthesis methods
The preparation of 2-fluorobenzoic acid is based on anthranilic acid as raw material, adding anhydrous hydrogen fluoride and sodium nitrite in methoxyethyl methyl ether solvent for diazotization, refluxing for 3 hours, and post-processing to obtain the finished product.
-

Yield:445-29-4 95%

Reaction Conditions:

with oxygen;Cu(OAc)2*H2O;Co(OAc)2.4H2O in lithium hydroxide monohydrate at 70; under 760.051 Torr; for 12 h;

Steps:

10 Example 10 Preparation of o-fluorobenzoic acid by oxidation of o-fluorobenzaldehyde

Under normal pressure oxygen, water (2mL), o-fluorobenzaldehyde (1mmol), Cu(OAc)2· H2O (0.03mmol, 3% mole fraction) and Co(OAc)2· 4H2O (0.03mmol, 3% mole fraction) was added to a 15mL glass reaction tube, and an oxygen balloon was connected.The reaction tube was placed in an oil bath heated to 70°C in advance and stirred for 12 hours. After the reaction was completed, the temperature was lowered, the crude product solid was separated by centrifugation, and then ultrasonically washed with 3 mL of water, centrifuged and dried to constant weight to obtain the target product. The separation yield was 95 %.

References:

CN111116348,2020,A Location in patent:Paragraph 0030-0031

2-Fluorobenzoic acid Related Search:

侯马市| 巫山县| 会同县| 临夏市| 北碚区| 枝江市| 阳泉市| 蛟河市| 兴仁县| 平乡县| 拉萨市| 彰化县| 资兴市| 香港| 电白县| 闸北区| 确山县| 梧州市| 大宁县| 花垣县| 洛隆县| 重庆市| 合山市| 汝城县| 莱西市| 望江县| 穆棱市| 七台河市| 偃师市| 黑河市| 黄浦区| 寿宁县| 涟水县| 广汉市| 平武县| 佳木斯市| 犍为县| 石门县| 拜泉县| 连云港市| 巴里|