3
20
H. Firouzabadi et al.
LETTER
of NaOH (10%, 25 mL), and the mixture was extracted
with CH Cl (2 × 25 mL). The organic layer was separated
2
2
and washed with water (2 × 15 mL) and dried over anhy-
drous Na SO . Evaporation of the solvent under reduced
2
4
pressure gave almost pure dithioacetal 2. Further purifica-
tion was achieved by column chromatography on silica
gel using petroleum ether as eluent to give the desired
product(s) in good to excellent yields (Table 1).
Acknowledgement
We thank Shiraz University Research Council for the partial sup-
port of this work.
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