午夜插插,噜噜噜影院,啪啪伊人网,欧美熟夫,景甜吻戏视频,男人强操性感蕾丝美女视频在线网站,日本美女跳舞视频

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 6-Chloropyridazin-3-ol
19064-67-6

6-Chloropyridazin-3-ol synthesis

8synthesis methods
-

Yield:19064-67-6 90%

Reaction Conditions:

Reflux;

Steps:

3 Procedure for the preparation of 6-chloropyridazin-3(2H)-one
In a 50mL round-bottom flask were added a solution of absolute ethanol (10 mL) and dichloropyridazine (1.00 g, 6.71 mmol). The mixture was stirred at reflux of ethanol for 24 h. After cooling down to room temperature, a saturated NH4Cl solution (30 mL) was added and the resulting solution was extracted with CH2Cl2 (330 mL). The combined organic layers were dried over Na2SO4, filtered, and evaporated under vacuum. The crude solid was triturated in petroleum ether, filtered through a Buchner to afford the pure product (0.785 g, 90%).

References:

Sengmany, Stéphane;Lebre, Julie;Le Gall, Ewan;Léonel, Eric [Tetrahedron,2015,vol. 71,# 29,p. 4859 - 4867]

FullText

6-Chloropyridazin-3-ol Related Search: