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 Dimethyl phthalate
131-11-3

Dimethyl phthalate synthesis

14synthesis methods
Dimethyl phthalate is produced industrially from phthalic anhydride and methanol.
-

Yield:131-11-3 96%

Reaction Conditions:

with sulfuric acid for 24 h;Reflux;

Steps:

Synthesis of phthalic acid ester 3

Phthalic acid (2, 6.00 g, 36.2 mol) was dissolved in methanol (130 mL). After thatconc. sulfuric acid (6.80 mL) was slowly added dropwise. The reaction mixture wasstirred under reflux for 24 h. After cooling down to room temperature the solution wasconcentrated and added to a mixture of 200 mL dichloromethane/water (1:1). Theaqueous phase was extracted three times with dichloromethane. The combinedorganic layers were dried over magnesium sulfate and the solvent was removedunder reduced pressure. A yellow oil was obtained

References:

Peters, Morten K.;Herges, Rainer [Beilstein Journal of Organic Chemistry,2017,vol. 13,p. 2659 - 2662] Location in patent:supporting information

Dimethyl phthalate Related Search:

凌云县| 台东县| 八宿县| 永州市| 海阳市| 平武县| 彰化县| 信宜市| 洪洞县| 安泽县| 迁西县| 海淀区| 安康市| 西乌| 荃湾区| 顺昌县| 南昌市| 鄢陵县| 宾川县| 平乐县| 车致| 教育| 甘孜县| 丰城市| 台北县| 西平县| 达拉特旗| 武清区| 许昌县| 阳新县| 顺义区| 泗水县| 藁城市| 桂林市| 鹤岗市| 阳朔县| 康乐县| 吕梁市| 桐城市| 稻城县| 拉萨市|