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-Bromo-5-methoxytoluene
27060-75-9

2-Bromo-5-methoxytoluene synthesis

13synthesis methods
-

Yield:27060-75-9 75%

Reaction Conditions:

Stage #1:4-bromo-3-methylphenol with potassium carbonate in N,N-dimethyl-formamide at 20; for 0.0833333 h;
Stage #2:methyl iodide in N,N-dimethyl-formamide at 20; for 24 h;

Steps:


l-Bromo-4-methoxy-2-methyl-benzene 88. To a stirred solution of of 4-bromo-3 -methyl phenol (1 g, 5.3 mmol) in 6 mL DMF was added K2CO3 (2.21g, 16 mmol) and the reaction was stirred at r.t. for 5 min before addition of MeI (0.41 mL, 6.6 mmol). Stirring was continued for a further 24 h before water was added and the organics were extracted into EtOAc. The solution was concentrated under reduced pressure to give pale brown liquid, 0.814 g, 75% yield: 1H NMR (270 MHz, CDCl3) 2.36 (3H, s), 3.76 (3H, s), 6.61 (IH5 dd, J= 3.0, 8.8 Hz)5 6.78 (IH5 d, J= 3.0 Hz), 7.39 (IH, d, J= 8.7 Hz).

References:

STERIX LIMITED WO2007/96647, 2007, A2 Location in patent:Page/Page column 127-128

FullText

2-Bromo-5-methoxytoluene Related Search:

大悟县| 西乌珠穆沁旗| 延吉市| 望城县| 手机| 原平市| 舒城县| 巍山| 曲沃县| 环江| 灵台县| 许昌县| 云林县| 郯城县| 杭州市| 罗平县| 金昌市| 灵川县| 贡嘎县| 哈密市| 墨玉县| 滦南县| 庄河市| 读书| 上饶县| 万年县| 来安县| 饶阳县| 玉田县| 买车| 商都县| 临城县| 黄陵县| 龙海市| 廊坊市| 盐边县| 闵行区| 昌图县| 开远市| 长岭县| 涪陵区|