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!

60946-77-2

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

2synthesis methods
-

Yield:60946-77-2 90%

Reaction Conditions:

with triethylamine;magnesium chloride in acetonitrile at 20;

Steps:

1

Experimental operation: Take malonate potassium salt 1.00g (about 5.47mmol) and anhydrous magnesium chloride was added 0.65g (about 6.84mmol) in 25mL round bottom flask, 0.55g triethylamine was dropped after 6mL dissolved in acetonitrile, stirred at room temperature for 30min. Then dropped by 2mL acetonitrile dissolved 0.48g (2.5mmol) 2,4- dimethoxybenzoyl chloride, supplemented triethylamine 0.06mL, stirred at room temperature overnight. Post-treatment: 30mL of water was added to dilute the reaction solution, and then were added 30,20,20mL ethyl acetate, and the ethyl acetate layer was collected. After washing with saturated brine 30mL ethyl acetate layer was dried over anhydrous sodium sulfate, and spin dry column chromatography (PE: EA = 15: 1) to give the product isolated 2a, a yield of 90%

References:

CN105566340,2016,A Location in patent:Paragraph 0010

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

石阡县| 余干县| 台前县| 郴州市| 敦化市| 阿图什市| 慈溪市| 固原市| 义马市| 博乐市| 宜川县| 隆化县| 土默特左旗| 广宗县| 惠来县| 安达市| 濮阳市| 获嘉县| 普安县| 景谷| 墨玉县| 五家渠市| 湖州市| 夏津县| 莒南县| 大丰市| 巫溪县| 湖北省| 藁城市| 图木舒克市| 安化县| 航空| 彩票| 佛山市| 高邮市| 纳雍县| 广宗县| 周宁县| 凤庆县| 漳州市| 同德县|