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 1-Dodecanethiol
112-55-0

1-Dodecanethiol synthesis

12synthesis methods
Preparation of 1-dodecanethiol: 1-Bromododecane, thiourea and 95% ethanol are heated to reflux reaction, then sodium hydroxide solution is added and heated. After the reaction is finished, cooled and left to stratify, the oil layer is the crude thiol. The crude product is washed with water, dried, distilled, and distilled under reduced pressure, which is 1-dodecanethiol.
-

Yield:112-55-0 244 g

Reaction Conditions:

with sodium hydrogensulfide;tetrabutylammomium bromide in water;chlorobenzene at 65 - 70; for 12 h;

Steps:

5 Example 5

The second phase (445 g) is distilled to obtain n-chlorododecane (V) (143 g). 143 g of the n-chlorododecane (V), 100 g of chlorobenzene, 180 g of a 32% by weight sodium bisulfide solution in water and 4 g of tetra-butylammonium bromide are added into a 1000 ml four-necked flask with a stirrer, a thermometer and a condenser. At a temperature in the range of from 65 to 70° C., the mixture is reacted for 12 h. The mixture is separated into an aqueous layer and an organic layer. The organic layer is n-dodecanethiol (III) (244 g).

References:

US2015/336910,2015,A1 Location in patent:Paragraph 0277

1-Dodecanethiol Related Search:

天台县| 公安县| 准格尔旗| 衡东县| 堆龙德庆县| 民县| 莱西市| 荥经县| 长沙市| 池州市| 信丰县| 塔城市| 景德镇市| 公主岭市| 广西| 于都县| 开鲁县| 花垣县| 兴山县| 呈贡县| 潢川县| 收藏| 吉林省| 乐都县| 阿城市| 兰州市| 高清| 延庆县| 乐昌市| 白银市| 巢湖市| 富阳市| 定襄县| 寻乌县| 常山县| 确山县| 扶绥县| 漯河市| 阜新市| 白朗县| 八宿县|