反应详情

As a nonlimiting example using method C in FIG. 2, (5-oxo-1,3-oxathiolan-2-yl) methyl butanoate or the 5-acetyloxy derivative thereof may be obtained from process which includes reacting 2,2-diethoxyethyl butanoate in DCM and treating with TFA and water. This reaction yields 2-oxoethylbutanoate, which may be reacted with mercaptoacetic acid in CSA and DCM to produce the desired (5-oxo-1,3-oxathiolan-2-yl) methyl butanoate., or with 1,4-dithiane-2,5-diol in THF to obtain the 5-acetyloxy derivative.