Publications de Chandra Mouleeswara Rao Volla

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

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

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

2010

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

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

Palladium-catalyzed desulfinylative C–C allylation of Grignard reagents and enolates using allylsulfonyl chlorides and esters

Pierre Vogel, Chandra Mouleeswara Rao Volla

2-Methylprop-2-ene-, prop-2-ene-, 1-methylprop-2-ene-, and (E)-but-2-enesulfonyl chlorides have been used as electrophilic partners in desulfinylative palladium- catalyzed C–C coupling with Grignard reagents and sodium salts of dimethyl malonate and methyl ...

2009

Chemoselective C-H Bond Activation: Ligand and Solvent Free Iron-Catalyzed Oxidative C-C Cross-Coupling of Tertiary Amines with Terminal Alkynes. Reaction Scope and Mechanism

Pierre Vogel, Chandra Mouleeswara Rao Volla

FeCl2 catalyzes the oxidative C-C cross-coupling of tertiary amines with terminal alkynes into propargylamines using (t-BuO)2 as oxidant. The reaction can be applied to aromatic and aliphatic amines and alkynes without solvent. High chemoselectivity for am ...

2009

Iron/copper-catalyzed C–C cross-coupling of aryl iodides with terminal alkynes

Pierre Vogel, Chandra Mouleeswara Rao Volla

Synergic effect of iron and copper salts as catalysts for the Sonogashira–Hagihara cross-couplings of aryl iodides with terminal alkynes is demonstrated. High yields of cross- coupled products are obtained under conditions that are smoother than those usin ...

Elsevier2008

Iron-Catalyzed Mizoroki–Heck Cross-Coupling Reaction with Styrenes

Pierre Vogel, Chandra Mouleeswara Rao Volla, Rafal Loska

In the presence of iron(II) chloride (FeCl2 ; 20 mol%) and potassium tert-butoxide (t- BuOK; 4 equiv.) in dimethyl sulfoxide (DMSO), aryl and heteroaryl iodides undergo stereoselective Mizoroki–Heck C—C cross-coupling reactions with styrenes at 60 8C givin ...

Wiley2008

Iron-Catalyzed Desulfinylative C-C Cross-Coupling Reactions of Sulfonyl Chlorides with Grignard Reagents

Pierre Vogel, Chandra Mouleeswara Rao Volla

Wiley-VCH Verlag GmbH2008

Palladium-Catalyzed Desulfitative Mizoroki-Heck Coupling Reactions of Sulfonyl Chlorides with Olefins in a Nitrile-functionalized Ionic Liquid

Pierre Vogel, Paul Joseph Dyson, Dongbin Zhao, Zhaofu Fei, Chandra Mouleeswara Rao Volla

Aryl and alkenyl sulfonyl chlorides can be used in Heck-Mizoroki-type couplings with mono- and disubstituted olefins in a nitrile-functionalized ionic liquid, viz. [C3CNpy][Tf2N]. Advantages over previously reported methods include: (1) use of a cheap cat ...

2006