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-Bromo-4-fluoroaniline
1003-98-1

2-Bromo-4-fluoroaniline synthesis

6synthesis methods
4-Fluoroaniline

371-40-4

2-Bromo-4-fluoroaniline

1003-98-1

The general procedure for the synthesis of 2-bromo-4-fluoroaniline from 4-fluoroaniline was as follows: 200 mL of distilled N,N-dimethylformamide (DMF) and 4-fluoroaniline (8.64 mL, 58.13 mmol) were added to a two-necked flask equipped with a stirring device. N-bromosuccinimide (11.4 g, 63.95 mmol) dissolved in DMF was added slowly and dropwise with stirring. After completion of the reaction, extraction was carried out using dichloromethane (CH2Cl2). The product was purified by column chromatography (eluent ratio of ethyl acetate: n-hexane = 1:4), and the target product 2-bromo-4-fluoroaniline was finally obtained in 95% yield.

-

Yield:1003-98-1 95%

Reaction Conditions:

with N-Bromosuccinimide in N,N-dimethyl-formamide;

Steps:

3.1.1-5

Add 200 mL distilled DMF and 4-fluoroaniline (8.64 mL, 58.13 mmol) to a two neck flask. Slowly dropwise N-Bromosuccinimide (11.4 g, 63.95 mmol) dissolved in DMF. When the reaction is complete, extract with CH2Cl2. Purification by column separation (EA: Hx = 1: 4) (yield: 95%)

References:

KR2018/50795,2018,A Location in patent:Paragraph 0134; 0135; 0152-0154

2-Bromo-4-fluoroaniline Related Search:

东明县| 青河县| 龙门县| 焉耆| 资讯 | 酒泉市| 关岭| 镇江市| 岐山县| 隆尧县| 宁远县| 延庆县| 榆社县| 新乡县| 滨州市| 焦作市| 鄱阳县| 漾濞| 赞皇县| 永和县| 永济市| 山东省| 柞水县| 泾阳县| 东源县| 孙吴县| 武夷山市| 夹江县| 新安县| 肇源县| 左权县| 南投市| 米脂县| 来凤县| 安吉县| 仪征市| 平定县| 西充县| 锦州市| 宣武区| 龙口市|