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-THIENYL-2-DIMETHYLAMINOETHYL KETONE HCL
5424-47-5

2-THIENYL-2-DIMETHYLAMINOETHYL KETONE HCL synthesis

3synthesis methods
-

Yield: 94%

Reaction Conditions:

with hydrogenchloride in water;isopropyl alcohol for 6 h;Reflux;

Steps:

3.1 3-(dimethylamino)-1-(2-thienyl)-1-propanone hydrochloride 2a:
Following a protocol defined by Robertson [1], a mixture of 2-acetylthiophene (128g, 1000 mmol), dimethylamine hydrochloride (90 g,1100 mmol), paraformaldehyde (41 g, 1400 mmol), concentrated hydrochloric acid(5 mL) and isopropanol (500 mL) was refluxed for 6 h. After the completion ofthe reaction, the obtained solution was cooled to 0 oC and stirredfor 1 h more. The slurry was then filtered, and the solid was washed with coldisopropanol, dried for 16 h at 50 oC to afford 2a.

References:

Chen, Xiang;Liu, Zhi-Qiang;Lin, Chao-Ping;Zheng, Yu-Guo [Bioorganic Chemistry,2016,vol. 65,p. 82 - 89] Location in patent:supporting information