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!

676348-64-4

3-(2,4-DIMETHOXY-PHENYL)-3-OXO-PROPIONIC ACID METHYL ESTER synthesis

2synthesis methods
-

Yield:676348-64-4 89%

Reaction Conditions:

with aluminum (III) chloride in dichloromethane at 0 - 20;chemoselective reaction;Friedel-Crafts Acylation;

Steps:

Friedel-Crafts Reactions of Aryl Methyl Ethers 8, 10-12 with Acyl Chlorides 6, 7, and 13; General Procedure A

General procedure: AlCl3 (467 mg, 3.5 mmol) was suspended in CH2Cl2 (10 mL) in a round-bottom flask. The corresponding aryl methyl ether 8 or 10-12 (1.0 mmol) was added to this suspension and the mixture was cooled down to 0 °C. After stirring for 5 min, the corresponding acyl chloride 6, 7, or 13 (1.5 mmol) was added dropwise and the resulting mixture was stirred at r.t. The progress of the reaction was monitored by TLC (hexane/EtOAc, 8:2). At the end of the reaction (5-10 h), the mixture was poured into aq 1 N HCl and extracted with CH2Cl2 (4 ×). The combined organic phases were washed with aq 1 N HCl, aq NaHCO3 (with the exception of reactions with 7) and H2O, and dried over MgSO4. The solvents were evaporated under reduced pressure and the remaining residue was purified by column chromatography.

References:

Richter, Celin;Ernsting, Nikolaus P.;Mahrwald, Rainer [Synthesis,2016,vol. 48,# 8,p. 1217 - 1225]

3-(2,4-DIMETHOXY-PHENYL)-3-OXO-PROPIONIC ACID METHYL ESTER Related Search:

苏尼特右旗| 福州市| 兴文县| 嘉定区| 百色市| 遂平县| 涡阳县| 明水县| 曲麻莱县| 彭水| 克什克腾旗| 郓城县| 石楼县| 潞西市| 林州市| 克东县| 紫金县| 牡丹江市| 四子王旗| 习水县| 阳原县| 丹东市| 夏津县| 蕉岭县| 萨嘎县| 白山市| 广昌县| 海丰县| 綦江县| 雷山县| 临湘市| 平南县| 东平县| 休宁县| 襄汾县| 天津市| 密山市| 永登县| 抚顺县| 东乡| 班戈县|