Rossana Perciaccante

Giuliana Cardillo; Luca Gentilucci; Massimo Gianotti; Hahn Kim; Rossana Perciaccante; Alessandra Tolomelli

Abstract The conjugate addition of O -benzylhydroxylamine and N , O -bis(trimethylsilyl)hydroxylamine to alkylidene and arylidene malonates in the presence of Lewis acids affords the corresponding β-hydroxylamino derivatives in good yields. The use of Cu(OTf) 2 in the presence of chiral bisoxazoline ligands opens the possibility of performing this reaction in a catalytic and enantioselective way.

Giuliana Cardillo; Serena Fabbroni; Luca Gentilucci; Massimo Gianotti; Rossana Perciaccante; Simona Selva; Alessandra Tolomelli

Abstract The absolute configuration of aziridine-2,2-dicarboxylates was determined through their transformation into the corresponding diastereomeric (S)-(−)-α-methylbenzylamido derivatives. The data obtained allows establishment of the stereochemistry of the first step of the conjugate addition reaction catalyzed by chiral bisoxazoline–Cu complex.

Marco Bandini; Pier Giorgio Cozzi; Magda Monari; Rossana Perciaccante; Simona Selva; Achille Umani-Ronchi

A new class of remarkably stable B-BOXate complexes has been synthesised, isolated and employed as chiral catalysts for asymmetric reduction of variously substituted prochiral ketones.

Andrea Gualandi; Giacomo Rodeghiero; Emanuele Della Rocca; Francesco Bertoni; Marianna Marchini; Rossana Perciaccante; Thomas Paul Jansen; Paola Ceroni; Pier Giorgio Cozzi

Here we report the application of readily prepared and available coumarin dyes for photoredox catalysis, which are able to mimic powerful reductant [Ir(iii)] complexes. Coumarin derivatives 9 and 10 were employed as photoreductants in pinacol coupling and in other reactions, in the presence of Et3N as a sacrificial reducing agent. As the electronic, photophysical, and steric properties of coumarins could be varied, a wide applicability to several classes of photoredox reactions is predicted.

Giuliana Cardillo; Serena Fabbroni; Luca Gentilucci; Rossana Perciaccante; Fabio Piccinelli; Alessandra Tolomelli

Giuliana Cardillo; Luca Gentilucci; Massimo Gianotti; Rossana Perciaccante; Alessandra Tolomelli

Giuliana Cardillo; Serena Fabbroni; Luca Gentilucci; Rossana Perciaccante; Alessandra Tolomelli

Giuliana Cardillo; Serena Fabbroni; Luca Gentilucci; Rossana Perciaccante; Fabio Piccinelli; Alessandra Tolomelli

Fides Benfatti; Giuliana Cardillo; Luca Gentilucci; Rossana Perciaccante; Alessandra Tolomelli; Alberico Catapano

Fides Benfatti; Giuliana Cardillo; Serena Fabbroni; Luca Gentilucci; Rossana Perciaccante; Alessandra Tolomelli; Monica Baiula; Santi Spampinato