Davy-reagent ethyl

Related Reagents. 1,3,2,4-Dithiadiphosphetane, 2,4-Bis-(methylthio)-2,4-disulfide (Davy-reagent methyl) 1,3,2, 4-dithiadiphosphetane, 2,4-Bis(ethylthio)-2,4-disulfide (Davy-reagent ethyl) 1,3,2,4-Dithiadiphosphetane, 2,4-Bis(phenyl-thio)-2,4-disulfide 1,3,2,4-Dithiadiphosphetane, 2,4-Bis-[(4-methox3q)henyl)thio]-2,4-disulfide 1,3,2,4-Dithiadiphosphetane, 2,4-bis(4-methoxyphenyl)-2,4-disulfide (Lawesson Reagent). 

Cyclopropylpropiolic acid ethyl ester, 66, 177 Davis reagent, 66, 203... 

The present procedure for the preparation of oxazolidinone 3 is a variation of the procedures described by Luche" and Davies. Yields have been substantially enhanced by improving the purification procedures. The preparation of 3 starting from valine methyl or ethyl ester hydrochloride has been described by several authors. > > > These procedures suffer from moderate yields for the Grignard addition step and some of them use hazardous reagents like phosgene. 

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