Jörg Velker

The High Stereoselectivity of the Tandem Sequence Diels-Alder Reaction/Ireland­-Claisen Rearrangement Starting from Substituted O-(E)-Buta-1,3-dienyl Ketene Acetals and Cyclic Dienophiles (2008)

Soldermann, Nicolas, Velker, Jörg, Neels, Antonia, Stoeckli-Evans, Helen, Neier, Reinhard

A new tandem reaction leads to bicyclic cyclohexene derivatives with complete control of the relative configuration of the four chiral centers formed. The high diastereoselectivity is the consequence...

The High Stereoselectivity of the Tandem Sequence Diels-Alder Reaction/Ireland­-Claisen Rearrangement Starting from Substituted O-(E)-Buta-1,3-dienyl Ketene Acetals and Cyclic Dienophiles (2008)

Soldermann, Nicolas, Velker, Jörg, Neels, Antonia, Stoeckli-Evans, Helen, Neier, Reinhard

A new tandem reaction leads to bicyclic cyclohexene derivatives with complete control of the relative configuration of the four chiral centers formed. The high diastereoselectivity is the consequence...

Tandem Reactions Combining Diels-Alder Reactions with Sigmatropic Rearrangement Processes and their Use in Synthesis (2007)

Neuschütz, Klaus, Velker, Jörg, Neier, Reinhard

Diels-Alder reactions and sigmatropic rearrangements are of paramount importance in synthesis. The tandem Diels-Alder/sigmatropic rearrangement processes combining these two powerful methods is...

Tandem Reactions Combining Diels-Alder Reactions with Sigmatropic Rearrangement Processes and their Use in Synthesis (2007)

Neuschütz, Klaus, Velker, Jörg, Neier, Reinhard

Diels-Alder reactions and sigmatropic rearrangements are of paramount importance in synthesis. The tandem Diels-Alder/sigmatropic rearrangement processes combining these two powerful methods is...

The Novel Sequence Diels-Alder Reaction/Ireland-Claisen Rearrangement Applied to Acyclic Dienophiles: New Insights into the Selectivity of the Ireland-Claisen Rearrangement (2007)

Velker, Jörg, Roblin, Jean-Philippe, Neels, Antonia, Tesouro, Ana, Stoeckli-Evans, Helen, Klaerner, Frank-Gerrit, ...

The new dienes 4a-d, 7 and 11 reacted in good yields with acyclic dienophiles like methyl acrylate and diethyl fumarate in the tandem process Diels-Alder reaction/Ireland-Claisen rearangement....

The Novel Sequence Diels-Alder Reaction/Ireland-Claisen Rearrangement Applied to Acyclic Dienophiles: New Insights into the Selectivity of the Ireland-Claisen Rearrangement (2007)

Velker, Jörg, Roblin, Jean-Philippe, Neels, Antonia, Tesouro, Ana, Stoeckli-Evans, Helen, Klaerner, Frank-Gerrit, ...

The new dienes 4a-d, 7 and 11 reacted in good yields with acyclic dienophiles like methyl acrylate and diethyl fumarate in the tandem process Diels-Alder reaction/Ireland-Claisen rearangement....

Calamitic liquid crystals containing metal–metal bonds : design of mesomorphic materials based on the Ru2(CO)4(µ-η2-O2CR)2L2 sawhorse unit (2006)

Deschenaux, Robert, Donnio, Bertrand, Rheinwald, Gerd, Stauffer, Frédéric, Süss-Fink, Georg, Velker, Jörg

A series of complexes based on the stable [Ru2(CO)4(µ-η2-O2CR)2L2] sawhorse unit has been prepared and characterized. The derivatives [Ru2(CO)4(µ-η2-O2CR)2{NC5H4(CO2C6H4OCnH2n+1-p)-p}2] (R = H, n...

Calamitic liquid crystals containing metal–metal bonds : design of mesomorphic materials based on the Ru2(CO)4(µ-η2-O2CR)2L2 sawhorse unit (2006)

Deschenaux, Robert, Donnio, Bertrand, Rheinwald, Gerd, Stauffer, Frédéric, Süss-Fink, Georg, Velker, Jörg

A series of complexes based on the stable [Ru2(CO)4(µ-η2-O2CR)2L2] sawhorse unit has been prepared and characterized. The derivatives [Ru2(CO)4(µ-η2-O2CR)2{NC5H4(CO2C6H4OCnH2n+1-p)-p}2] (R = H, n...