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 2,2-DIFLUOROETHYLAMINE
430-67-1

2,2-DIFLUOROETHYLAMINE synthesis

6synthesis methods
-

Yield:430-67-1 82%

Reaction Conditions:

with ammonia;potassium iodide in dimethyl sulfoxide at 100; for 1 h;Product distribution / selectivity;Autoclave;

Steps:

3
Example 3; An autoclave is initially charged with 14,5 g (0.1 mol) of 2,2-difluoro-l-bromoethane, 0.5 g of potassium iodide and 50 g of DMSO having a water content of 250 ppm, i.e. 0.025% by volume, and 6.8 g of anhydrous ammonia are added. The molar ratio of 2,2-difluoro-1-bromoethane to ammonia is 1:4. The reaction mixture is heated to 100° C. and stirred at this temperature for 1 hour. The reaction mixture is cooled to 50° C. and the excess ammonia is distilled off. The difluoroethylamine is subsequently distilled out of the reaction mixture at 1-10 mbar. The distillate, which still contains small amounts of solvent, is then redistilled at standard pressure. This gives 82% yield.

References:

Bayer CropScience AG US2011/60167, 2011, A1 Location in patent:Page/Page column 3

FullText

2,2-DIFLUOROETHYLAMINE Related Search: