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Aluminum trifluromethanesulfonate [Al(OTf ) 3 ] is a highly efficient and chemoselective catalyst for the thioacetalization of carbonyl compounds.

Dithiane derivativesDithiane derivatives R 0490 Highly Efficient and Chemoselective Thioacetalization of Carbonyl Compounds Catalyzed with Aluminum Trifluoromethanesulfonate [Al(OTf)3]. -The chemoselectivity of the thioacetalization is presented by some mixtures with structurally differing carbonyl compounds. The title catalyst can also be used in 1,2-dichloroethane solution. -(FIROUZABADI*, H.; IRANPOOR, N.; KOHMAREH, G.; Synth. Commun. 33 (2003) 1, 167-173; Dep. Chem., Coll. Sci., Shiraz Univ., Shiraz 71454, Iran; Eng.) -K. Woydowski 23-136