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Your search keyword '"Gioia, Claudio"' showing total 2 results
Start Over Author "Gioia, Claudio" Topic asymmetry (chemistry)
2 results on '"Gioia, Claudio"'

1. Asymmetric Diels-Alder Reactions of Vinylindoles Using Organocatalysis.

Author

Gioia, Claudio

Subjects
*DIELS-Alder reaction, *ASYMMETRY (Chemistry), *INDOLE, *CATALYSIS, *RING formation (Chemistry), *HYDROGEN bonding
Abstract

The different behavior of 3- and 2-vinylindoles in Diels-Alder cycloaddition reactions in the presence of bifunctional hydrogen bond donor organocatalysts is described. [ABSTRACT FROM AUTHOR]

Published
2010
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2. Chitosan aerogel: a recyclable, heterogeneous organocatalyst for the asymmetric direct aldol reaction in water.

Author

Ricci, Alfredo, Bernardi, Luca, Gioia, Claudio, Vierucci, Simone, Robitzer, Mike, and Quignard, Françoise

Subjects
CHITOSAN, AEROGELS, HETEROGENEOUS catalysis, ASYMMETRY (Chemistry), BIOPOLYMERS, CRUSTACEA, STEARIC acid, CHEMICAL reactions
Abstract

Aerogel microspheres of chitosan, an abundant biopolymer obtained from marine crustaceans, have been successfully applied to catalyze the asymmetric aldol reaction in water, providing the products in high yields and with good stereoselectivity (up to 93% ee) and recyclability (up to 4 runs). Yields were favourably affected by additives such as DNP and stearic acid. [ABSTRACT FROM AUTHOR]

Published
2010
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