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 3-Ethoxy-4-methoxybenzaldehyde
1131-52-8

3-Ethoxy-4-methoxybenzaldehyde synthesis

9synthesis methods
In a 3 L dry reaction flask, 157 g of sodium hydroxide was dissolved in 1500 ml of water, 500 g of isovanillin, 120 g of tetrabutylammonium fluoride, and 537 g of ethyl bromide were added, and the reaction was stirred at 25°C for 4 hours. After filtration by suction, an off-white solid powder of 3-ethoxy-4-methoxybenzaldehyde was obtained with a purity of 99.9% and a yield of 96.1%.
-

Yield:1131-52-8 96.1%

Reaction Conditions:

with tetrabutyl ammonium fluoride;sodium hydroxide in water at 25; for 4 h;Reagent/catalyst;

Steps:

1 Example 1

In a 3 L dry reaction flask, 157 g of sodium hydroxide was dissolved in 1500 ml of water, 500 g of isovanillin, 120 g of tetrabutylammonium fluoride, and 537 g of ethyl bromide were added, and the reaction was stirred at 25° C. for 4 hours. After filtration by suction, an off-white solid powder of 3-ethoxy-4-methoxybenzaldehyde was obtained with a purity of 99.9% and a yield of 96.1%.

References:

CN107827722,2018,A Location in patent:Paragraph 0034-0041

3-Ethoxy-4-methoxybenzaldehyde Related Search:

东丽区| 南部县| 兴文县| 东宁县| 峨眉山市| 三明市| 时尚| 上栗县| 乌恰县| 鹤岗市| 田林县| 神池县| 琼中| 尤溪县| 修水县| 遵义市| 璧山县| 威信县| 琼海市| 贡嘎县| 宁阳县| 英吉沙县| 桂平市| 九江市| 吴桥县| 垫江县| 柳河县| 永仁县| 巴林右旗| 周至县| 西乌珠穆沁旗| 吉水县| 威宁| 临沂市| 崇信县| 衡南县| 西宁市| 天镇县| 五大连池市| 新泰市| 台中市|