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SUMMARY Chalcones (1, 3-diaryl-2-propen-1-ones), member of flavonoids family, are
important class of natural or synthetic products. They are protector of plants against insects …

2. Principles 2.1. Characteristic properties of lanthanide ions 2.2. Complex formation shift
2.3. Contact shift 2.4. Pseudo-contact shift 2.5. Relaxation rate enhancement 3. Lanthanide …

Chiral N-heterocyclic carbene catalysts generated from triazolium salts promote the
cyclopentene-forming annulation of α, β-unsaturated aldehydes and 4-oxoenoates with …

Asymmetric Diels-Alder (D.-A.) reaction of 5-hydroxynaphthoquinone (juglone) with
butadienyl acetate catalyzed by the binaphthol-derived chiraltitanium (BINOL-Ti) complex 1 …

The scope of the palladium-catalyzed cyclization/dimerization of terminal allenyl ketones 1
to the 2, 4-disubstituted furans 3 has been investigated. Simplified and improved conditions …

This review summarizes the recent progress which has been made in the use of chiral Lewis
Acid catalysts in Diels-Alder cycloaddition reactions. Chiral catalysts containing aluminum …

Ab initio calculations have been performed on the conformations of acrolein, acrylic acid,
methyl acrylate, and complexes of these species with Lewis acids, H+, Li+, and BH3. Acrylic …

The GaCl3-catalyzed [4+ 1] cycloaddition reactions of α, β-unsaturated ketones with
isocyanides leading to lactone derivatives are described. While some other Lewis acids also …

Detailed mechanisms of the diboration of the acyclic α, β-unsaturated carbonyl compounds
acrolein, methyl acrylate, and dimethyl fumarate (DMFU) catalyzed by Pt (0) complexes were …