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 Hexaethylene Glycol Monomethyl Ether
23601-40-3

Hexaethylene Glycol Monomethyl Ether synthesis

12synthesis methods
HexaethyleneGlycolMonomethylEther can be used as organic synthesis intermediates and pharmaceutical intermediates, mainly in laboratory research and development. It can be synthesized by condensation reaction of Hexaethylene glycol and Iodomethane.
-

Yield:23601-40-3 69%

Reaction Conditions:

with potassium hydroxide at 100; for 12 h;

Steps:

3.1 Step 1; Preparation of 2,5,8,11, 14,17-hexaoxanonadecan-19-ol
2-(2-(2-Methoxyethoxy)ethoxy)ethyl 4-methylbenzenesulfonate (Al, 1.0 g, 3.14 mmol) was added with stir to triethylene glycol (2.10 mL, 15.7 mmol). Potassium hydroxide (510 mg, 9.42 mmol) was ground into a powder and added to the reaction and the mixture refluxed at 100°C for 12 hours, upon which the reaction was diluted with water (50 mL) and extracted with DCM. The organic layers were combined, dried over sodium sulfate, and concentrated under reduced pressure to obtain 2,5,8,1 l,14,17-hexaoxanonadecan-19-ol as a yellow oil in 69% yield.

References:

AMYDIS DIAGNOSTICS;THE REGENTS OF THE UNIVERSITY OF CALIFORNIA;YANG, Jerry;THEODORAKIS, Emmanuel, A.;SARRAF, Stella WO2015/143185, 2015, A1 Location in patent:Paragraph 00819

FullText

Hexaethylene Glycol Monomethyl Ether Related Search:

屏山县| 民勤县| 河源市| 滦南县| 福鼎市| 金阳县| 合阳县| 肇东市| 永泰县| 依兰县| 崇明县| 鲁山县| 库车县| 神池县| 石阡县| 安宁市| 永州市| 武胜县| 镇原县| 南郑县| 连州市| 灵丘县| 静安区| 龙里县| 建水县| 通榆县| 峨边| 贵溪市| 苏尼特左旗| 汝城县| 无棣县| 兖州市| 宕昌县| 松溪县| 湘阴县| 苏州市| 清丰县| 方城县| 汕头市| 增城市| 东兰县|