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!

29778-28-7

1-FLUORO-3-(2-PHENYLETHYNYL)BENZENE synthesis

11synthesis methods
-

Yield:29778-28-7 96%

Reaction Conditions:

with bis-triphenylphosphine-palladium(II) chloride in tetrahydrofuran at 20; for 8 h;

Steps:

Cross-coupling reaction of 1a with 4-iodoanisole

General procedure: In a 25mL of flask containing 0.03g of Pd(PPh3)2Cl2 was added 5mL of THF. Next, 10mL (0.5M in THF, 5.0mmol) organizinc (1a) was added into the flask at room temperature. 4-Iodoanisole (0.39g, 1.67mmol) was added into the flask, then the resulting mixture was stirred at room temperature for 3.0h. Qenched with 3M HCl solution, extracted with ether (10mL×3). Combined organic layers were washed with saturated NaHCO3, Na2S2O3 solutions, and brine. Dried over MgSO4. Column chromatography with hexanes afforded 0.34g of 2a (98%) as a pale brown solid (m.p. 93-95°C).

References:

Joo, Seong-Ryu;Kim, Jong-Sung;Kim, Seung-Hoi [Tetrahedron Letters,2017,vol. 58,# 33,p. 3267 - 3270]

卢湾区| 青龙| 宁河县| 连山| 马公市| 武定县| 牙克石市| 同仁县| 虎林市| 张家界市| 南溪县| 天等县| 芜湖市| 含山县| 朔州市| 漳平市| 江北区| 泊头市| 南部县| 韶山市| 彩票| 上虞市| 论坛| 武冈市| 孟连| 高碑店市| 丰原市| 手机| 临沭县| 新闻| 石首市| 宝山区| 巫溪县| 和田市| 五大连池市| 金湖县| 凉城县| 濮阳市| 丰原市| 商城县| 象山县|