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Dive into the research topics where A Ciappa is active.

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Featured researches published by A Ciappa.


Chemistry & Biodiversity | 2008

Homogeneous Asymmetric Catalysis in Fragrance Chemistry

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

Asymmetric catalysis in fragrance chemistry: a new synthesis of Galaxolide®

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

The asymmetric hydrogenation of 2-phenethylacrylic acid as the key step for the enantioselective synthesis of Citralis Nitrile®

Alberto Scrivanti; S Bovo; A Ciappa; Ugo Matteoli


Journal of Molecular Catalysis A-chemical | 2006

Hydroformylation of m-diisopropenylbenzene and 1-isopropyl-3-isopropenylbenzene for the preparation of the fragrance Florhydral®

Stefano Paganelli; A Ciappa; Mauro Marchetti; Alberto Scrivanti; Ugo Matteoli


Tetrahedron-asymmetry | 2007

Asymmetric catalysis in fragrance chemistry: a new synthetic approach to enantiopure Phenoxanol®, Citralis® and Citralis Nitrile®

Ugo Matteoli; A Ciappa; S Bovo; Matheo Bertoldini; Alberto Scrivanti


Journal of Molecular Catalysis A-chemical | 2004

The asymmetric hydrogenation of 1,1,4,4,7-pentamethyl-2-methylen-1,2,3,4-tetrahydro-naphthalene, a viable catalytic approach to the synthesis of non-racemic Fixolide®

A Ciappa; Alberto Scrivanti; Ugo Matteoli


Dyes and Pigments | 2012

Detection Of Singlet Oxygen Generated By Commercial Fine Art Organic Pigments By Means Of A Novel, Robust Chemical Probe

Morena Silvestrini; A Ciappa; Fabrizio Fabris; Giuseppe Borsato; Ottorino De Lucchi


XXII Congresso Nazionale della Società Chimica Italiana – Divisione di Chimica Industriale | 2006

A novel synthesis of the floral fragrance Citralis® by asymmetric hydrogenation of (Z)-3-methyl-5-phenyl-pent-2-en-1-ol

A Ciappa; S Bovo; Alberto Scrivanti; Ugo Matteoli


XXII Congresso Nazionale della Società Chimica Italiana – Divisione di Chimica Industriale | 2006

A new asymmetric catalytic route to Florhydral

S Bovo; A Ciappa; Alberto Scrivanti; Ugo Matteoli


XXII Congresso Nazionale della Società Chimica Italiana – Divisione di Chimica Industriale | 2006

Enantiomerically enriched Citralis Nitrile® and Citralis® by asymmetric hydrogenation

S Bovo; E Serena; A Ciappa; Alberto Scrivanti; Ugo Matteoli

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Alberto Scrivanti

Ca' Foscari University of Venice

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Ugo Matteoli

Ca' Foscari University of Venice

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S Bovo

Ca' Foscari University of Venice

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Stefano Paganelli

Ca' Foscari University of Venice

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Fabrizio Fabris

Ca' Foscari University of Venice

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Giuseppe Borsato

Ca' Foscari University of Venice

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Matteo Bertoldini

Ca' Foscari University of Venice

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Morena Silvestrini

Ca' Foscari University of Venice

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Ottorino De Lucchi

Ca' Foscari University of Venice

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