Publications by authors named "Gorka Peris"

Background: Unmanned aerial systems (UAS) are providing interesting disruptive solutions for spray application of crop protection products with very-low spray volumes (VLV) down to 8 L/ha that offer improved sustainability through reduced water volumes and reduced soil compaction. However, the efficacy of products can be reduced by the significantly lower crop/plant spray coverage and formulation designs that can compensate for this are highly important here.

Results: Suspension Concentrate (SC) formulations designed for VLV use containing and delivering low dose rates (g/ha) of organosilicone alkoxylate high-spreading surfactants were found to result in leaf coverage of VLVs comparable to those observed at higher spray volumes.

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A chiral benzylic ether serves as an auxiliary for oxindole carboxylation (dr 5.2:1.0) that sets C10 configuration in a potential diazonamide precursor.

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The combined action of carbodiimide and hydrogen peroxide upon exposure to carboxylic acid catalysts serves to generate transient peracids that can be engaged in the Baeyer-Villiger rearrangement of ketones to lactones. Up to 35 turnovers of the catalytic cycle may be achieved. The conditions are especially useful in the context of reactive cyclohexanones, and allow the use of H2O2 as the terminal oxidant.

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Mixed benzofuranyl carbonates derived from chiral chloroformates rearranged in the presence of nucleophilic catalysts to give C-carboxylated benzofurans with variable dr. The use of chiral nucleophilic catalysts gave modest improvement in dr, but better results were obtained by optimizing auxiliary and catalyst. Thus, 8k was obtained with 9:1 dr.

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