Published by admin on 28 Apr 2008
Tandem molybdenum catalyzed hydrosilylations: an expedient synthesis of β-aryl aldehydes
Practical method for the two-carbon homologation of aryl aldehydes has been developed.
Archive for April, 2008
Published by admin on 27 Apr 2008
Conformational control of molecular tweezers containing a disulfide bond by redox reactions
Non-covalent interactions are important in controlling the shapes of compounds and play an important role in supramolecular chemistry. Molecular tweezers, which have two aromatic chromophores connected by a spacer, are suitable receptors for planar π-electron guests because the two aromatic arms can hold the guest through π–π stacking interactions.
Published by admin on 24 Apr 2008
Application of the Excited State Meta Effect in Photolabile Protecting Group Design
Published by admin on 21 Apr 2008
Terminal Olefins from Aldehydes through Enol Triflate Reduction
The transformation of aldehydes into terminal olefins through reduction of the corresponding enol triflates is described.
Published by admin on 17 Apr 2008
Modular One-Pot Synthesis of Tetrasubstituted Pyrroles from α-(Alkylideneamino)nitriles
2,3,4,5-Tetrasubstituted pyrroles have been prepared with high regioselectivity by a formal cycloaddition of α-(alkylideneamino)nitriles and nitroolefins followed by elimination of HCN and HNO2. The reaction allows the convergent construction of the pyrrole ring in four steps from a nitroalkane and three aldehydes.
Published by admin on 14 Apr 2008
Catalytic Asymmetric Diamination of Conjugated Dienes and Triene
A catalytic asymmetric for a variety of conjugated dienes and triene has been effectively achieved using di-tert-butyldiaziridinone as nitrogen source with a catalyst generated from Pd2(dba)3 and tetramethylpiperidine-derived phosphorus amidite ligand, giving diamination products in good yields with high regio-, diastereo-, and enantioselectivities.
