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 6,7,8-TRIMETHOXYCOUMARIN
6035-49-0

6,7,8-TRIMETHOXYCOUMARIN synthesis

8synthesis methods
-

Yield:6035-49-0 81%

Reaction Conditions:

for 0.25 h;Inert atmosphere;Reflux;

Steps:



General procedure: The appropriate o-hydroxybenzaldehyde (1 mmol) and ethyl(triphenylphosphoranylidene) acetate(1.2 mmol) were dissolved in N,N-diethylaniline (1.5 mL) and the resulting mixture was stirred under aN2 atmosphere and reflux for 15 min. The solvent was removed under reduced pressure (1 mmHg,52 °C) and the resulting brown oil was purified by column chromatography (petroleum ether-ethylacetate, 3:1).

References:

Gao, Wenqing;Li, Qingyong;Chen, Jian;Wang, Zhichao;Hua, Changlong [Molecules,2013,vol. 18,# 12,p. 15613 - 15623]

6,7,8-TRIMETHOXYCOUMARIN Related Search:

塔河县| 宝鸡市| 遵化市| 寿宁县| 怀宁县| 新乡县| 濮阳市| 西乌珠穆沁旗| 弥渡县| 治多县| 澄迈县| 富宁县| 大冶市| 江山市| 剑川县| 丹阳市| 潮安县| 论坛| 黎平县| 义乌市| 惠州市| 定结县| 广昌县| 柳林县| 宁波市| 水富县| 昌乐县| 临朐县| 江永县| 汉川市| 贡觉县| 大厂| 丰宁| 鲜城| 禄劝| 台州市| 通河县| 安庆市| 米易县| 清丰县| 莱芜市|