天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

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 Propionic acid hydrazide
5818-15-5

Propionic acid hydrazide synthesis

5synthesis methods
-

Yield: 54%

Reaction Conditions:

with hydrazine hydrate in ethanol at 90; for 8 h;

Steps:

16.1 Step 1) propionohydrazide
[368] To a mixture of ethyl propionate (10 g, 97.9 mmol) in 25 mL of anhydrous EtOH was added hydrazine hydrate (4.5 mL, 93.0 mmol, 80%). The mixture was refluxed at 90 °C for 8 hours, then cooled down to rt and concentrated in vacuo to give the title compound as a white solid (4.37 g, 54%). MS (ESI, pos. ion) m/z: 89.2 [M+H]+.

References:

SUNSHINE LAKE PHARMA CO., LTD.;CALITOR SCIENCES, LLC;XI, Ning;WANG, Tingjin;FENG, Xuejin;WU, Shuang;ZHANG, Tao;WANG, Liang WO2016/149160, 2016, A1 Location in patent:Paragraph 368

Propionic acid hydrazide Related Search: