Ethylene Glycol → 2-Hydroxyethyl butyrate

Participants

Reaction Steps

As a nonlimiting example using method B in FIG. 2 to obtain the (5-oxo-1,3-oxathiolan-2-yl) methyl butanoate or its 5-acetyloxy derivative is to react 1,2-dihydroxy ethane with n-butyryl chloride in triethylamine. This reaction produces 2-hydroxyethyl butanoate, which is further reacted P2O5 in dry DCM, followed by DMSO and triethylamine to produce 2-oxyethyl butanoate. The 2-oxyethyl butanoate can be converted to the 5-acetyloxy derivative of (5-oxo-1,3-oxathiblan-2-yl) methyl butanoate by the process described above, or it can be converted into (5-oxo-1,3-oxathiolan-2-yl) methyl butanoate by reacting with mercaptoacetic acid and CSA in dry DCM.

Provenance & Evidence