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 2,2'-BIPYRIMIDINE
34671-83-5

2,2'-BIPYRIMIDINE synthesis

4synthesis methods
2,2'-Bipyrimidine can be used as organic intermediate and pharmaceutical intermediate, mainly used in laboratory research and development process. Nickel bromide, 5-trimethylsilyl-2,2'-bipyridine and zinc powder were added in 2-chloropyrimidine and N-methyl-2-pyrrolidone under a atmosphere of nitrogen at room temperature. The obtained mixture was reacted at 70°C for 2 hours to give 2,2'-bipyrimidine. 
-

Yield:-

Reaction Conditions:

with zinc;5-trimethylsilyl-2,2'-bipyridine;nickel dibromide in 1-methyl-pyrrolidin-2-one at 20 - 70;Inert atmosphere;

Steps:

21
To a glass reaction container equipped with a cooling apparatus, 15.3 mg of nickel bromide, 19.2 mg of 5-trimethylsilyl-2,2'-bipyridine and 91.6 mg of zinc powder were added in an atmosphere of nitrogen at room temperature. To the obtained mixture, 80.2 mg of 2-chloropyrimidine and 5 mL of N-methyl-2-pyrrolidone were added. The obtained mixture was reacted at 70°C for 2 hours to obtain a reaction mixture containing 2,2'-bipyrimidine. The yield of 2,2'-bipyrimidine was 7.9 mg.

References:

Sumitomo Chemical Company, Limited EP2172470, 2010, A1 Location in patent:Page/Page column 43

FullText

2,2'-BIPYRIMIDINE Related Search: