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-Fluoro-2-methylaniline
452-71-1

4-Fluoro-2-methylaniline synthesis

4synthesis methods
5-Fluoro-2-nitrotoluene

446-33-3

4-Fluoro-2-methylaniline

452-71-1

General procedure for the synthesis of 4-fluoro-2-methylaniline from 5-fluoro-2-nitrotoluene: 10% palladium/carbon (Pd/C, 21 mg, 0.020 mmol) was added to a solution of 4-fluoro-2-methyl-1-nitrobenzene (3b, 243 mL, 2.00 mmol) in methanol (MeOH, 10 mL). The reaction mixture was stirred at room temperature and bubbled with hydrogen (H2) for 2 hours. Upon completion of the reaction, the solid catalyst was removed by filtration and the solids were washed with dichloromethane (DCM, 25 mL). The filtrate and DCM wash solution were combined and concentrated under reduced pressure. The residue was purified by fast column chromatography (silica gel, petroleum ether (P.E.) gradient elution to petroleum ether:ethyl acetate (PE:EtOAc) 4:1) to afford 4-fluoro-2-methylaniline (4b) as a pink oil (250 mg, 100% yield).

4-Fluoro-2-methylaniline Related Search:

包头市| 延长县| 防城港市| 方山县| 郸城县| 平武县| 丁青县| 延庆县| 尖扎县| 调兵山市| 兴和县| 且末县| 台安县| 西和县| 内江市| 奉化市| 华阴市| 新建县| 加查县| 绥棱县| 贞丰县| 兰西县| 安龙县| 乌拉特后旗| 赤水市| 都匀市| 连山| 金川县| 呼图壁县| 漳平市| 南木林县| 固阳县| 靖江市| 柞水县| 阜平县| 正镶白旗| 吴堡县| 鄂托克前旗| 德兴市| 杭锦旗| 巩留县|