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
010-86108875
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 (R)-[3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methyl methanesulfonate
174649-09-3

(R)-[3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methyl methanesulfonate synthesis

11synthesis methods
Methanesulfonyl chloride

124-63-0

(5R)-3-(3-Fluoro-4-(4-morpholinyl)phenyl)-5-hydroxymethyl-2-oxazolidione

168828-82-8

(R)-[3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methyl methanesulfonate

174649-09-3

To a 1L solution of dichloromethane containing 132.8 g of (R)-3-[3-fluoro-4-(4-morpholinyl)phenyl]-5-hydroxymethyl-2-oxazolidinone and 87.1 g of triethylamine was slowly added 74 g of methanesulfonyl chloride at 0°C under nitrogen protection. The reaction mixture was stirred at 0 °C for 30 min and then gradually warmed up to room temperature. A white solid precipitated during the reaction. Subsequently, a solvent mixture consisting of 1.75 L of water, 6.50 L of dichloromethane and 1 L of ethyl acetate was added to the reaction system and stirring was continued for 30 minutes. Upon completion of the reaction, the white solid product was collected by filtration. A final product of 140 g was obtained with a yield of 105.42% (w/w).

-

Yield: 100%

Reaction Conditions:

with triethylamine in dichloromethane at 0; for 0.5 h;

Steps:

5
To a solution of 132.8 g of (R)-N-[[3-[3-fluoro-4-morpholinyl]phenyl]-2-oxo-5- oxazolidinyl] methanol and 87.1 g of triethylamine in IL of methylene dichloride at O0C under nitrogen was added 74 gm of methanesulfonyl chloride. The reaction mixture was allowed to stir at 0°C for 30 min, then allowed to warm to ambient temperature. A white solid was precipitated. 1.75 L water, 6.50 L methylene dichloride and IL ethyl acetate mixture were added followed by stirring for 30 min. The reaction mass was filtered to get a white solid. Yield: 140 g.; Percentage: 105.42% w/w

References:

USV LIMITED WO2009/63505, 2009, A2 Location in patent:Page/Page column 14

(R)-[3-(3-Fluoro-4-morpholinophenyl)-2-oxo-5-oxazolidinyl]methyl methanesulfonate Related Search: