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 Dibutyl sulfide
544-40-1

Dibutyl sulfide synthesis

11synthesis methods
From butyl bromide and sodium sulfide in boiling ethanol; according to some authors two forms exist, exhibiting different boiling points but identical solubilities in various solvents; both forms are insoluble in water.
-

Yield:544-40-1 95%

Reaction Conditions:

with potassium ethyl xanthogenate at 120; for 12 h;Inert atmosphere;

Steps:

10 Example 10 Preparation of di-n-butyl sulfide

Under a nitrogen atmosphere,Bromobutane (136 mg, 1 mmol),Ethyl xanthate (80 mg, 0.5 mmol),N, N-dicarboximide (2 ml) was added to the dried reaction tube,Suspended in oil bath at 120 ° C for 12 h. After the reaction system was cooled,15 ml of water was added,The aqueous phase was extracted three times with 30 ml of ethyl acetate,The organic phases were combined,The solvent was evaporated under reduced pressure,Column chromatography gave di-n-butyl sulfide as a colorless oily liquid.(71 mg, yield 95%).

References:

CN105218418,2016,A Location in patent:Paragraph 0063; 0064

Dibutyl sulfide Related Search:

梅州市| 巴林左旗| 三明市| 大庆市| 阿鲁科尔沁旗| 黔西| 苍溪县| 且末县| 晋城| 丘北县| 玛纳斯县| 勃利县| 抚远县| 宜兰县| 嘉峪关市| 科技| 永顺县| 和顺县| 周至县| 齐齐哈尔市| 怀来县| 韶关市| 陇川县| 嘉义县| 宜兰县| 新平| 建瓯市| 新邵县| 道孚县| 盐亭县| 洛扎县| 叙永县| 岳池县| 冀州市| 花莲市| 和静县| 大埔区| 林周县| 镇雄县| 马鞍山市| 尖扎县|