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 2-Bromobenzyl bromide
3433-80-5

2-Bromobenzyl bromide synthesis

11synthesis methods
In the reaction flask, 15g of toluene was added to 100mL of glacial acetic acid, and then 3g of iron powder was added to the localization catalyst, and 8mL of bromine was slowly added dropwise under the condition of room temperature for about 30min, and t
-

Yield:3433-80-5 24 g

Reaction Conditions:

with bromine;iron;acetic acid at 40; for 0.1 h;Irradiation;

Steps:

4 Example 4
In the reaction flask,15g of toluene was added to 100mL of glacial acetic acid,Then added to locate the catalyst iron powder 3g,Bromine was slowly added dropwise at room temperature 8mL,About 30min dropping finished,Heated to 40 after reaction 5h,Then add 300W tungsten lamp under light reaction 5h,TLC monitoring raw material reaction is complete,Solvent glacial acetic acid was distilled off under vacuum,Concentrate by adding a certain amount of 20% concentration of sodium hydroxide solution,The reaction mixture was filtered and the filtrate was extracted three times with dichloromethane. The organic phases were combined and the organic phase was dried over anhydrous sodium sulfate and concentrated to give 24 g of o-bromobenzyl bromide.

References:

Mao Along CN106986880, 2017, A Location in patent:Paragraph 0023; 0032; 0033

FullText

2-Bromobenzyl bromide Related Search:

监利县| 徐水县| 民乐县| 尤溪县| 福建省| 怀仁县| 武定县| 宁波市| 平利县| 繁昌县| 梁河县| 平山县| 全州县| 九台市| 永康市| 驻马店市| 大同县| 临清市| 浏阳市| 米易县| 甘泉县| 达孜县| 大英县| 阿勒泰市| 肃北| 扎兰屯市| 东至县| 祁门县| 航空| 台北县| 定日县| 溆浦县| 开化县| 武功县| 文昌市| 太原市| 九龙坡区| 太湖县| 施秉县| 安国市| 武穴市|