Microwave Thermolysis Vi : A Rapid and General Method for Dethioacetalization Using “Clayan” in Dry Media
摘要:
A variety of thioacetals, dithiolanes and dithianes are deprotected into their carbonyl compounds using clay supported ammonium nitrate "Clayan" under microwave irradiation. The present method avoids the use of toxic oxidants and excess of solvent.
Highly Efficient Transthioacetalization of O,O-Acetals Catalyzed by Indium(III) Chloride
作者:Brindaban C. Ranu、Arijit Das、Sampak Samanta
DOI:10.1055/s-2002-25347
日期:——
A simple, efficient and general procedure has been developed for the transthioacetalization of O,O-acetals catalyzed by indium(III) chloride in 1,2-dichloroethane.
Microwave Thermolysis Vi : A Rapid and General Method for Dethioacetalization Using “Clayan” in Dry Media
作者:H. M. Meshram、Gondi Sudershan Reddy、G. Sumitra、J. S. Yadav
DOI:10.1080/00397919908086080
日期:1999.4
A variety of thioacetals, dithiolanes and dithianes are deprotected into their carbonyl compounds using clay supported ammonium nitrate "Clayan" under microwave irradiation. The present method avoids the use of toxic oxidants and excess of solvent.
Chemoselective Dithioacetalization and Oxathioacetalization of Carbonyl Compounds Using Alumina Sulfuric Acid as Catalyst
Carbonyl compounds have been successfully converted into their corresponding dithiolane, dithiane, and oxathiolane derivatives using a catalytic amount of alumina sulfuric acid (Al2O3-SO3H) with excellent yields at room temperature in short reaction times under mild conditions. This simple method is a highly chemoselective procedure for protection of aldehydes in the presence of ketones, and the heterogeneous catalyst can be recovered and reused several times without any loss of its activity.
1,3,4-Thiadiazol-2-ylphenyl-1,2,4,5-tetrazines: efficient synthesis via Pinner reaction and their luminescent properties