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!

109069-75-2

4-Chloro-2-methoxy-5-nitro-benzoic acid methyl ester synthesis

4synthesis methods
-

Yield:-

Reaction Conditions:

with sodium chloride;sulfuric acid in methanol;

Steps:

P.103 Methyl 4-mercapto-5-nitro-o-anisate

Production Example 103 Methyl 4-mercapto-5-nitro-o-anisate To a solution of 3.1 g of 4-chloro-5-nitro-o-anisic acid in methanol (100 ml) was added a catalytic amount of sulfuric acid and the resulting mixture was heated under reflux for 3 hours. Then the reaction mixture was poured into ice/water and extracted with ethyl acetate. The organic layer was washed with a saturated aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate. After distilling off the solvent under reduced pressure, 3.3 g of methyl 4-chloro-5-nitro-o-anisate was obtained as pale yellow crystals.

References:

US6518423,2003,B1

4-Chloro-2-methoxy-5-nitro-benzoic acid methyl ester Related Search:

芜湖县| 溧水县| 铜山县| 响水县| 类乌齐县| 通河县| 湖口县| 台前县| 民县| 芒康县| 汨罗市| 瑞昌市| 沙河市| 浮山县| 东至县| 和硕县| 蚌埠市| 博乐市| 巴彦县| 将乐县| 东光县| 虹口区| 寿阳县| 封开县| 博客| 新民市| 太湖县| 清流县| 常州市| 如皋市| 麦盖提县| 织金县| 晋宁县| 和平县| 象州县| 铅山县| 密云县| 桐柏县| 昌邑市| 蒙自县| 中宁县|