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-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride
25952-53-8

1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride synthesis

5synthesis methods
1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride can be used for the synthesis of amides. It is used as a coupling agent in the synthesis of esters from carboxylic acids using dimethylaminopyridine as the catalyst. 
-

Yield:25952-53-8 92%

Reaction Conditions:

with triethylamine hydrochloride in acetonitrile at 15; for 1 h;Temperature;

Steps:



Add 1100 g of triethylamine hydrochloride to a 3000 ml reaction flask.1000g of acetonitrile, wherein the mass ratio of triethylamine to HCL is 5:1,EDC213.6g was slowly added dropwise, and the temperature was controlled at 15 °C.The dropping time is controlled at 60 min, filtered,EDC hydrochloride was obtained with a purity of 99.5% and a yield of 92%.

References:

CN109369458,2019,A Location in patent:Paragraph 0025; 0034; 0035; 0039; 0040; 0044

1-(3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride Related Search:

策勒县| 乌审旗| 来凤县| 大悟县| 抚顺县| 麟游县| 买车| 当涂县| 永兴县| 柯坪县| 金川县| 扶绥县| 灵川县| 开化县| 宜昌市| 平塘县| 常德市| 洪江市| 万年县| 榆树市| 垫江县| 乡宁县| 比如县| 台前县| 汤阴县| 静宁县| 安徽省| 盐山县| 鹤壁市| 武清区| 新乡市| 襄汾县| 舒城县| 诸暨市| 靖西县| 静海县| 鸡西市| 滕州市| 松滋市| 喀什市| 西安市|