Concept

Sulfonic acid

Related publications (64)

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

Palladium-catalyzed domino Heck/cyanation: synthesis of 3-cyanomethyloxindoles and their conversion to spirooxoindoles

Jieping Zhu

3'-Alkyl-3-cyanomethyloxindoles, prepd. by a palladium-catalyzed domino Heck/cyanation, were efficiently converted to spiropyrrolidinyl-, spiropiperidinyl- and spirocyclopropyl-oxindoles. The so-obtained spirooxindoles bearing three diversity points were f ...

2010

Buffering soil-water acidity in chlorinated solvent bioremediation schemes

David Andrew Barry, Christof Holliger, Alessandro Brovelli, Clare Robinson, Elsa Marina Lacroix

Chlorinated solvents form a significant part of groundwater contamination worldwide. They are difficult to remove via physical means, and anaerobic source-zone remediation based on provision of fermentable e-donor is an attractive clean-up dechlorination o ...

International Union of Soil Sciences2010

Accumulation and detoxification of sulfonated aromatic compounds from dye and textile industries by different plant species

Jean-Paul Schwitzguebel

Sulfonated anthraquinones are precursors of a large family of synthetic dyes and pigments, recalcitrant to biodegradation and thus not eliminated by classical wastewater treatments. In the development of a phytotreatment to remove sulfonated aromatic compo ...

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

New developments in iron-catalyzed carbon-carbon bond forming reactions

Chandra Mouleeswara Rao Volla

The goal of this thesis is to develop new carbon-carbon bond forming reactions using inexpensive and simple coupling partners like aryl halides (pseudohalides), sulfonyl derivatives, Grignard reagents, alkenes and alkynes with metal catalysis, preferably u ...

EPFL2009

Use of sultines in the asymmetric synthesis of polypropionate antibiotics

Pierre Vogel, Maris Turks, Cotinica Craita, Freddy Fonquerne, Christopher Flowers, Laure Bouchez, Xiaogen Huang

At low temperature and in the presence of an acid catalyst, SO2 adds to 1,3-dienes equilibrating with the corresponding 3,6-dihydro-1,2-oxathiin-2-oxides (sultines). These compounds are unstable above -60 degrees C and equilibrate with the more stable 2,5- ...

De Gruyter2008

Accumulation and transoformation of sulfonated aromatic compounds by higher plants - toward the phytotreatment of wastewater from dye and textile industries

Jean-Paul Schwitzguebel, Sylvie Aubert, Stéphanie Braillard

Sulfonated anthraquinones are precursors of many synthetic dyes and pigments, recalcitrant to biodegradation and thus not eliminated by classical wastewater treatments. In the development of a phytoremediation process to remove sulfonated aromatic compound ...

Springer-Verlag2008

Synthesis, Characterization, and Dielectric Properties of Phthalocyanines with Ester and Carboxylic Acid Functionalities

Martin Molberg

Monomeric phthalocyanine pentylester derivatives containing Cu and Zn were synthesized via the cyclotetramerization of 4,5-dipentylphthalonitrile. Conversion of the pentylester derivatives by hydrolysis yielded the octacarboxylic acid phthalocyanine deriva ...

2008

Total asymmetric synthesis of glycomimetics and polypropionates of biological interest

Pierre Vogel

Using readily available chiral auxiliaries such as (+)- and (-)-camphanic acid, (R,R)- and (S,S)-tartaric acid derivatives (e.g. RADO(R)-COCl, SADO(R)-COCl) efficient diastereoselective syntheses of rare sugars and glycomimetics have been developed. They e ...

2008

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