title: Optically active α-phenylethylamine as efficient organocatalyst in the solvent-free reactions between 2,3-butanedione and conjugated nitroolefins.
abstract: (R)-(+) and (S)-(-)-1-phenylethylamine have been shown to promote highly diastereoselective and complementary enantioselective formal [3 + 2]carbocyclization reactions between 2,3-butanedione and conjugated nitroalkenes with formation of enantiomerically rich 2-hydroxy-3-nitrocyclopentanone derivatives. The reactions were carried out both in solvent and under solvent-free conditions. The absolute configurations of the products were assigned by X-ray and circular dichroism spectra analyses.
authors: Department of Chemical and Pharmaceutical Sciences, University of Trieste, Italy.
authors: Fulvia
authors: F
authors: Felluga
authors: Cristina
authors: C
authors: Forzato
authors: Patrizia
authors: P
authors: Nitti
authors: Giuliana
authors: G
authors: Pitacco
authors: Fabio
authors: F
authors: Prati
authors: Ennio
authors: E
authors: Valentin
authors: Ennio
authors: E
authors: Zangrando