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 Diethyl 2-(4-fluoro-2-nitrophenyl)malonate
147124-35-4

Diethyl 2-(4-fluoro-2-nitrophenyl)malonate synthesis

3synthesis methods
-

Yield:147124-35-4 98%

Reaction Conditions:

with caesium carbonate in DMF (N,N-dimethyl-formamide) at 20; for 24 h;

Steps:



The reaction of 2,5-difluoronitrobenzene (XII) with malonic acid dimethyl ester (XI) at room temperature in the system caesium carbonate/dimethylformamide also leads after 24 hours in 98% yield to the desired product XIII (scheme 3):

References:

US6774242,2004,B1 Location in patent:Page column 4