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 4-FLUOROPHENYLUREA
659-30-3

4-FLUOROPHENYLUREA synthesis

10synthesis methods
-

Yield: 80.6%

Reaction Conditions:

with acetic acid in water at 50; for 2 h;

Steps:

4 General procedure for preparation of ureas (23a-m)
General procedure: To a solution of substituted aniline (0.1 mol) dissolved in 48 mL glacial acetic acid and 96 mL H2O, sodium cyanate (13 g, 0.2 mol) in warm water (90 mL) was added with continuous stirring. The mixture was warmed to 50 C for 2 h and then cooled in ice, The crude solid, thus obtained was filtered, dried, and recrystallized with boiling water.

References:

Liao, Weike;Hu, Gang;Guo, Zhuang;Sun, Deyu;Zhang, Lixia;Bu, Yanxin;Li, Yingxiu;Liu, Yajing;Gong, Ping [Bioorganic and Medicinal Chemistry,2015,vol. 23,# 15,p. 4410 - 4422]

4-FLUOROPHENYLUREA Related Search:

临沂市| 绥阳县| 漳浦县| 阳新县| 漯河市| 泰来县| 延川县| 亳州市| 蒲江县| 镇安县| 翼城县| 泰兴市| 涪陵区| 安陆市| 德格县| 遵化市| 衡东县| 黄石市| 鲁山县| 大洼县| 阿城市| 乌审旗| 甘泉县| 商丘市| 富阳市| 保山市| 石台县| 合水县| 沅江市| 承德县| 吴川市| 盘山县| 泰安市| 子洲县| 交口县| 开阳县| 霍林郭勒市| 五河县| 云浮市| 弥渡县| 西城区|