成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

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 1-(3-Nitorpyridin-2-yl)piperazine
87394-48-7

1-(3-Nitorpyridin-2-yl)piperazine synthesis

6synthesis methods
-

Yield:87394-48-7 95%

Reaction Conditions:

in acetonitrile;Heating / reflux;

Steps:

17.1

Example 17.1: 1 -(3-Nitro-pyridin-2-yl)-piperazine. A mixture of 2-chloro-3-nitro-pyridine (2,0 g, 0.013 mol), piperazine (5.43 g, 0.063 mol) and acetonitrile (50 mL) was heated at reflux overnight. The reaction mixture was cooled to room temperature, diluted with ethyl acetate, washed with water and washed with brine. The organic layer was separated, dried over sodium sulfate, filtered and concentrated to give l-(3-nitro-pyridin-2-yl)-piperazine (2.5 g, 95 %). The product was used without further purification.

References:

WO2008/112440,2008,A1 Location in patent:Page/Page column 38

1-(3-Nitorpyridin-2-yl)piperazine Related Search: