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-[2-(2-CHLOROETHOXY)ETHOXY]ETHANOL
5197-62-6

2-[2-(2-CHLOROETHOXY)ETHOXY]ETHANOL synthesis

8synthesis methods
2-(2-(2-chloroethoxy)ethoxy)ethanol can be used as an intermediate for drugs such as PranedipineTartrate and LJP-920 for laboratory research and development and chemical production. It was prepared from 2-(2-Chloroethoxy)ethanol, Ethylene oxid with boron trifluoride diethyl etherate by stirring for 2.5 h at 45 - 55℃.
-

Yield:5197-62-6 84%

Reaction Conditions:

with thionyl chloride at 70; for 6 h;

Steps:

1
3.0g of triethylene glycol was dissolved in 20mL of sulfoxide chloride (SOCl2), heated to 70 ° C and stirred for 6 hours.After the reaction, the product was concentrated to obtain a crude product, which was separated by column chromatography (200-300 mesh silica gel, eluent: n-hexane: ethyl acetate = 1: 1) to obtain pure intermediate 60.

References:

ShanghaiTech University;Tao Houchao;Zhao Fei CN110894209, 2020, A Location in patent:Paragraph 0085; 0252; 0254; 0263

FullText

2-[2-(2-CHLOROETHOXY)ETHOXY]ETHANOL Related Search:

桐柏县| 平遥县| 莎车县| 富阳市| 固安县| 桑植县| 灵丘县| 深圳市| 丘北县| 当阳市| 略阳县| 无棣县| 龙门县| 龙里县| 衡阳市| 徐水县| 曲周县| 滦南县| 安陆市| 凤山县| 江山市| 武邑县| 桦川县| 望江县| 奎屯市| 措美县| 吴堡县| 虞城县| 黔东| 山阳县| 沐川县| 高唐县| 邵阳市| 张掖市| 尼木县| 安阳市| 综艺| 禹州市| 金阳县| 武川县| 获嘉县|