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 3-FLUORO-PYRIDINE-2-CARBOXYLIC ACID METHYL ESTER
869108-35-0

3-FLUORO-PYRIDINE-2-CARBOXYLIC ACID METHYL ESTER synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

in methanol;hexane;benzene at 20; for 0.5 h;

Steps:

6.1
Production Example 6-1: Methyl 3-fluoropyridin-2-carboxylate: A hexane solution (3 mL) of 2 M trimethylsilyldiazomethane was added to a benzene/methanol mixed solvent (1/1, 12 mL) of 3-fluoropyridine-2-carboxylic acid (250 mg), and stirred at room temperature for 30 minutes. The solvent was evaporated off under reduced pressure from the reaction solution, and the resulting residue was purified through silica gel column chromatography (chloroform/methanol = 40/1) to obtain the entitled compound (238 mg).

References:

BANYU PHARMACEUTICAL CO., LTD. EP1748048, 2007, A1 Location in patent:Page/Page column 36

3-FLUORO-PYRIDINE-2-CARBOXYLIC ACID METHYL ESTER Related Search: