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 5-Formyl-2-methoxy-benzonitrile
21962-50-5

5-Formyl-2-methoxy-benzonitrile synthesis

12synthesis methods
-

Yield:21962-50-5 100%

Reaction Conditions:

with Dess-Martin periodane in dichloromethane at 20; for 2 h;

Steps:

8.4 Step 4: Preparation of 5-formyl-2-methoxyphenyl cyanide

In a solution of compound a '(845 mg, 5.2 mol) in dichloromethane (50 mL)(1,1,1-triacetyl) -1,1-dihydro-1,2-benzoyl-3 (1-hydro) -one (2.6 g, 6.2 mmol) was added.And the mixture was stirred at room temperature for 2 hours. The resulting reaction was dried and concentrated, and the resulting residue was subjected to flash column chromatography (petroleum ether: ethyl acetate = 3: 1) to give the white solid compound b ': 5-formyl-2-methoxybenzonitrile (845 mg, Yield 100%).

References:

CN106146504,2016,A Location in patent:Paragraph 0219; 0220; 0221; 0228; 0229

葫芦岛市| 婺源县| 秦皇岛市| 南宁市| 鸡东县| 勃利县| 玛纳斯县| 江口县| 罗甸县| 双鸭山市| 德江县| 科尔| 乐都县| 南乐县| 错那县| 桂阳县| 全椒县| 遵化市| 温泉县| 雅安市| 红桥区| 高阳县| 平湖市| 集安市| 保康县| 新田县| 盘锦市| 巩留县| 龙门县| 芒康县| 鹤壁市| 威海市| 兴宁市| 东丽区| 松潘县| 延吉市| 大港区| 肇庆市| 泾源县| 贺兰县| 会理县|