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-(N-Methylamino)benzonitrile
4714-62-9

4-(N-Methylamino)benzonitrile synthesis

15synthesis methods
-

Yield: 52%

Reaction Conditions:

with potassium carbonate;dimethyl sulfate in water;acetone

Steps:

8 4-N-Methylaminobenzonitrile
4-N-Methylaminobenzonitrile A mixture of 4-aminobenzonitrile (2 g, 17 mmol), dimethyl sulfate (1.66 mL, 17 mmol), potassium carbonate (5 g, 35.7 mmol) and acetone (30 mL) was refluxed for 19 hrs. The acetone was removed and water added. The solution was extracted with dichloromethane and upon drying and solvent removal the crude material was subject to column chromatography (silica, ethyl acetate/pentane, 2.5:7.5, Rf 0.37). Recrystallisation from dichloromethane/pentane gave the title compound as a white crystalline solid (1.16 g, 52%) m.p. 88-91° C. 1H n.m.r. [400 MHZ, CDCl3] δ 7.43, d, J 8.8 Hz, 2H, H2,6; 6.55, d, J 8.8 Hz, 2H, H3,5; 4.27, br s, 1H, NH; 2.93, s, 3H, NCH3. 13C n.m.r. [100 MHZ, CDCl3] δ 152.2, C4; 133.52, C2,6; 120.58, CN; 111.70, C3,5; 98.09, C1; 29.82, CH3.

References:

Peter MacCallum Cancer Institute US6548505, 2003, B1

4-(N-Methylamino)benzonitrile Related Search:

道真| 平谷区| 措美县| 武山县| 桓台县| 泊头市| 来宾市| 澄迈县| 萝北县| 同德县| 曲阳县| 吉林市| 正阳县| 营山县| 和政县| 武义县| 湖北省| 鱼台县| 融水| 大港区| 罗定市| 芮城县| 宁明县| 天峨县| 上犹县| 屏山县| 宝丰县| 盘山县| 滨海县| 池州市| 泗阳县| 东乡族自治县| 波密县| 绥德县| 犍为县| 晋中市| 台北市| 清新县| 交城县| 紫阳县| 启东市|