Abstract
An efficient procedure for the protection of carbonyl compounds into the corresponding 1,3‐oxathioacetal has been achieved using PAS as catalyst.
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Acknowledgment
We are thankful to the Department of Chemistry, Visva‐Bharati university and the DST‐FIST program. We also express our sincere thanks to B. C. Ranu, HOD, Department of Chemistry, Indian Association for the Cultivation of Science, for his constant encouragement.