Publications de Dean Markovic | EPFL Graph Search

Synthesis and Applications of Silyl 2-Methylprop-2-ene-1-sulfinates in Preparative Silylation and GC-Derivatization Reactions of Polyols and Carbohydrates

Pierre Vogel, Maris Turks, Dean Markovic, Sylvain Claude Laclef

Trimethylsilyl, triethylsilyl, tert-butyldimethylsilyl, and triisopropylsilyl 2-methylprop-2-ene-1-sulfinates were prepared through (CuOTf)(2)C6H6-catalyzed sila-ene reactions of the corresponding methallylsilanes with SO2 at 50 degrees C. Sterically hinde ...

Wiley-V C H Verlag Gmbh2016

Amide Formation in One Pot from Carboxylic Acids and Amines via Carboxyl and Sulfinyl Mixed Anhydrides

Pierre Vogel, Dean Markovic

An efficient method has been developed for the preparation of yet unknown acyclic mixed anhydrides of carboxylic and sulfinic acids. Sterically hindered 2-methylbut-3-ene-2-sulfinyl carboxylates add primary and secondary amines preferentially onto the carb ...

Amer Chemical Soc2013

The Catalyzed Desulfinylative Allylation of Carbonyl Compounds with Alk-2-enesulfonyl Chlorides and Silyl Alk-2-enesulfinates

Pierre Vogel, Dean Markovic, Chandra Mouleeswara Rao Volla, Sylvain Claude Laclef

2010

BCl3-Mediated Ene Reaction of Sulfur Dioxide and Unfunctionalized Alkenes

Pierre Vogel, Dean Markovic, Chandra Mouleeswara Rao Volla

The first ene reactions of SO2 and unfunctionalized alkenes are reported. Calculations suggest that the endergonic ene reactions of SO2 with alkenes can be used to generate beta,gamma-unsaturated sulfinyl and sulfonyl compounds. Indeed, in the presence of ...

2010

Ligandless Iron-Catalyzed Desulfinylative C-C Allylation Reactions using Grignard Reagents and Alk-2-enesulfonyl Chlorides

Pierre Vogel, Dean Markovic, Chandra Mouleeswara Rao Volla

Alk-2-enesulfonyl chlorides 1-4 were synthesized by the BCl3-promoted ene reaction of alkenes with SO2. These sulfonyl chlorides were then used as electrophilic partners in iron-catalyzed desulfinylative cross-coupling reactions with different Grignard rea ...

2009

Desulfinylation of Prop-2-enesulfinic Acid: Experimental Results and Mechanistic Theoretical Analysis

Pierre Vogel, Dean Markovic

The potential energy surfaces of the desulfinylation of prop-2-enesulfinic acid (13) in CH2Cl2 solution at -15 degrees C have been explored by quantum calculations and analyzed with kinetic data obtained for the reaction in absence or presence of additives ...

2009

Polysulfones as new organic catalysts : mechanism and development of new strategies for polyol selective semi-protection

Dean Markovic

Even unsubstituted butadiene adds to sulfur dioxide in the hetero-Diels-Alder mode more rapidly than in the chelotropic mode. The sultine can be observed in equilibrium with the diene and the sulfur dioxide only at low temperature and in the presence of CF ...

EPFL2005