Silica gel-supported polyphosphoric acid (PPA/SiO2) as an efficient and reusable catalyst for conversion of carbonyl compounds into oxathioacetals and dithioacetals
T Aoyama, T Takido, M Kodomari
Index: Aoyama, Tadashi; Takido, Toshio; Kodomari, Mitsuo Synlett, 2004 , # 13 p. 2307 - 2310
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Citation Number: 49
Abstract
Abstract A simple and efficient method for the conversion of carbonyl compounds to oxathioacetals and dithioacetals by using polyphosphoric acid supported on silica gel (PPA/SiO 2) as an acid catalyst have been developed. PPA/SiO 2 is easily recovered from the reaction mixture and reused without a decrease in catalytic activity.
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