Cascade [3 + 2]/[4 + 2] Cycloaddition of Enaminones with Vinylene Carbonate for the Synthesis of Functionalized Pyrrolo[2,1-]isoquinoline Derivatives.

We developed a protocol for the synthesis of functionalized pyrrolo[2,1-]isoquinoline derivatives (PIQDs) from enaminones using vinylene carbonate . This strategy involved [3 + 2] and [4 + 2] cycloadditions via heating a mixture of substrates with vinylene carbonate and DCE at 60 °C, catalyzed by [Cp*RhCl] and oxidized with Cu(OAc) and AgSbF promoted by NaOAc. As we increased the reaction temperature to 110 °C under the same conditions, we synthesized PIQDs through sequential C-H activation, alkene insertion, migratory insertion, C-N reductive elimination, β-O elimination, and finally dehydration.

Spray drying the Pickering emulsions stabilized by chitosan/ovalbumin polyelectrolyte complexes for the production of oxidation stable tuna oil microcapsules.

The microencapsulation of polysaturated fatty acids by spray drying remains a challenge due to their susceptibility to oxidation. In this work, antioxidant Pickering emulsions were attempted as feeds to produce oxidation stable tuna oil microcapsules. The results indicated that the association between chitosan (CS) and ovalbumin (OVA) was a feasible way to fabricate antioxidant and wettable complexes and a high CS percentage favored these properties.

Co-Extraction of Flaxseed Protein and Polysaccharide with a High Emulsifying and Foaming Property: Enrichment through the Sequence Extraction Approach.

A new focus with respect to the extraction of plant protein is that ingredient enrichment should target functionality instead of pursuing purity. Herein, the sequence aqueous extraction method was used to co-enrich five protein-polysaccharide natural fractions from flaxseed meal, and their composition, structure, and functional properties were investigated. The total recovery rate of flaxseed protein obtained by the sequence extraction approach was more than 80%, which was far higher than the existing reports.