K
Krassimira P. Guerra
Researcher at University of Lisbon
Publications - 7
Citations - 192
Krassimira P. Guerra is an academic researcher from University of Lisbon. The author has contributed to research in topics: Baylis–Hillman reaction & Enantioselective synthesis. The author has an hindex of 3, co-authored 7 publications receiving 146 citations. Previous affiliations of Krassimira P. Guerra include Instituto Superior Técnico.
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Journal ArticleDOI
Synthesis of Chiral Cyclopentenones.
TL;DR: This Review provides an overview of reported methods for enantioselective and asymmetric syntheses of cyclopentenones, including chemical and enzymatic resolution, asymmetric synthesis via Pauson-Khand reaction, Nazarov cyclization and organocatalyzed reactions, asymmetrical functionalization of the existing cyclopENTenone unit, andfunctionalization of chiral building blocks.
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An efficient and simple Morita–Baylis–Hillman reaction based on the N-methylpyrrolidine–Ba(OH)2 catalytic system
TL;DR: By using of precise catalytic amount of N-methylpyrrolidine and Ba(OH)2 in H2O/CH3OH 5/1 or CH3OH/CH2Cl2 3/1 solvent mixtures at T=0°C a Morita-Baylis-Hillman derivatives could be obtained in good to excellent yield from 2-cyclopenten-1-one, 2-cyclohexen-one-one and formaldehyde and diverse aryl aldehydes after suitable reaction time.
Journal ArticleDOI
Synthesis of Chiral Cyclopentenones
TL;DR: An overview of reported methods for enantioselective and asymmetric syntheses of cyclopentenones can be found in this paper, including chemical and enzymatic resolution, asymmetric synthesis via Pauson-Khand reaction, Nazarov cyclization and organocatalyzed reactions, and functionalization of chiral building blocks.
Journal ArticleDOI
Efficient Tandem Morita–Baylis–Hillman/Double Cross-Aldol Reaction between Cyclic Enones and Formaldehyde Promoted by N-Methylpyrrolidine
TL;DR: In this article, the Lewis base N-methylpyrrolidine acts in water as an efficient promoter of tandem reactions between 2 cyclopenten-1-one and aqueous formaldehyde.