天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

Welcome to chemicalbook!
Chinese English Japanese Germany Korea
400-158-6606
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 2,4,6-Trichloropyridine
16063-69-7

2,4,6-Trichloropyridine synthesis

5synthesis methods
-

Yield:16063-69-7 85%

Reaction Conditions:

with trichlorophosphate for 4 h;Reflux;

Steps:

General procedure for synthesis of 2,4,6-trichloropyridine(Y-3)
General procedure for synthesis of 2,4,6-trichloropyridine(Y-3)
A mixture of 2,6-dichloropyridine-1-oxide (Y-2) (8.20 g, 0.050 mol) in POCl3 (25 mL) was refluxed for 4 h.
Then, the solvent was evaporated under reduced pressure.
The residue was poured into crushed ice and extracted with petroleum ether (3 * 50 mL).The combined organic phase was dried over K2CO3, filtered, and concentrated in vacuum.
The residue was further purified by flash column chromatography using ethyl acetate/petroleum ether as an eluent to give 2,4,6-trichloropyridine (Y-3) as colorless needles, yield 85%, mp: 32-33 °C.

References:

Yang, Jiapei;Chen, Wenmin;Kang, Dongwei;Lu, Xueyi;Li, Xiao;Liu, Zhaoqiang;Huang, Boshi;Daelemans, Dirk;Pannecouque, Christophe;De Clercq, Erik;Zhan, Peng;Liu, Xinyong [European Journal of Medicinal Chemistry,2016,vol. 109,p. 294 - 304]

FullText

2,4,6-Trichloropyridine Related Search: