Sulfonated polyanthracene-catalyzed highly efficient and chemoselective thioacetalization of carbonyl compounds and transthioacetalization of acetals and acylals
摘要:
A straightforward and highly efficient procedure for the thioacetalization of a variety of aldehydes and transthioacetalization of acylals and acetals in good to excellent yields using catalytic amounts of sulfonated polyanthracene (S-PAT) is reported. The reactions were carried out in the presence of 1,2-ethanedithiol and 1,3-propanedithiole at room temperature under solvent-free conditions. Thioacetals were also prepared by the reaction of aromatic ketone and dithiole using S-PAT under reflux conditions in H2O as green solvent.
Application of BU<sub>4</sub>N<sup>+</sup>HSO<sub>4</sub> <sup>−</sup> as an Ionic Liquid and Acid Catalyst for Thioacetalization of Aldehydes and Ketones
作者:Abdol R. Hajipour、Peyman Hosseini、Arnold E. Ruoho
DOI:10.1080/10426500801967757
日期:2008.9.15
A variety of carbonyl containing compounds have been successfully reacted with 1,2-ethanedithiol in a thioacetylization reaction using tetrabutylammonium hydrogensulfate as a mild and efficient catalyst. Aldehydes and ketones react with good to excellent yields under mild conditions.