A Ciappa
Ca' Foscari University of Venice
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Publication
Featured researches published by A Ciappa.
Chemistry & Biodiversity | 2008
A Ciappa; S Bovo; Matteo Bertoldini; Alberto Scrivanti; Ugo Matteoli
Opposite enantiomers of a chiral fragrance may exhibit different olfactory activities making a synthesis in high enantiomeric purity commercially and scientifically interesting. Accordingly, the asymmetric synthesis of four chiral odorants, Fixolide®, Phenoxanol®, Citralis®, and Citralis Nitrile®, has been investigated with the aim to develop practically feasible processes. In the devised synthetic schemes, the key step that leads to the formation of the stereogenic center is the homogeneous asymmetric hydrogenation of a prochiral olefin. By an appropriate choice of the catalyst and the reaction conditions, Phenoxanol®, Citralis®, and Citralis Nitrile® were obtained in high enantiomeric purity, and odor profiles of the single enantiomers were determined.
Tetrahedron-asymmetry | 2002
A Ciappa; Ugo Matteoli; Alberto Scrivanti
Abstract A new synthesis of the olfactorally active stereoisomers of the musk odorant Galaxolide® is reported. The key step is the ruthenium-catalysed asymmetric hydrogenation of an α-aryl acrylic acid: asymmetric inductions up to 89% have been achieved using a catalytic system prepared in situ by mixing [Ru(benzene)Cl 2 ] 2 with ( S )-BINAP.
Tetrahedron Letters | 2006
Alberto Scrivanti; S Bovo; A Ciappa; Ugo Matteoli
Journal of Molecular Catalysis A-chemical | 2006
Stefano Paganelli; A Ciappa; Mauro Marchetti; Alberto Scrivanti; Ugo Matteoli
Tetrahedron-asymmetry | 2007
Ugo Matteoli; A Ciappa; S Bovo; Matheo Bertoldini; Alberto Scrivanti
Journal of Molecular Catalysis A-chemical | 2004
A Ciappa; Alberto Scrivanti; Ugo Matteoli
Dyes and Pigments | 2012
Morena Silvestrini; A Ciappa; Fabrizio Fabris; Giuseppe Borsato; Ottorino De Lucchi
XXII Congresso Nazionale della Società Chimica Italiana – Divisione di Chimica Industriale | 2006
A Ciappa; S Bovo; Alberto Scrivanti; Ugo Matteoli
XXII Congresso Nazionale della Società Chimica Italiana – Divisione di Chimica Industriale | 2006
S Bovo; A Ciappa; Alberto Scrivanti; Ugo Matteoli
XXII Congresso Nazionale della Società Chimica Italiana – Divisione di Chimica Industriale | 2006
S Bovo; E Serena; A Ciappa; Alberto Scrivanti; Ugo Matteoli