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[EN] The invention relate to graphite materials, and more specifically to the exfoliation of graphite using deep eutectic solvents, to methods related thereto, to polymer composite materials containing graphene and the methods for the production thereof, and to graphene/metal, exfoliated graphite/metal, graphene/metal oxide and exfoliated graphite/metal oxide composite materials and the methods for the production thereof., [ES] La presente invención se refiere a materiales grafíticos, y más específicamente a la exfoliación de grafito usando disolventes eutécticos profundos, métodos relacionados con ello, a materiales compuestos poliméricos que contienen grafeno y los métodos para su preparación, materiales compuestos grafeno/metal, grafito exfoliado/metal, grafeno/óxido metálico y grafito exfoliado/óxido metálicoy los métodos para su preparación.

La presente invención se refiere a materiales grafíticos, y más específicamente a la exfoliación de grafito usando disolventes eutécticos profundos, métodos relacionados con ello, a materiales compuestos poliméricos que contienen grafeno y los métodos para su preparación, materiales compuestos grafeno/metal, grafito exfoliado/metal, grafeno/óxido metálico y grafito exfoliado/óxido metálicoy los métodos para su preparación.

Líquidos iónicos, procedimiento de preparación y su uso como electrolitos para dispositivos electroquímicos de almacenamiento de energía. La presente invención se refiere a líquidos iónicos de formula general (1) , su síntesis y al uso de los dichos líquidos iónicos como electrolitos en dispositivos electroquímicos de almacenamiento de energía eléctrica. ,....

[EN] The invention relates to ionic liquids of general formula (I), to the synthesis thereof, and to the use of said ionic liquids as electrolytes in electrochemical electrical energy storage devices., [ES] La presente invención se refiere a líquidos iónicos de formula general (I), su síntesis y al uso de los dichos líquidos iónicos como electrolitos en dispositivos electroquímicos de almacenamiento de energía eléctrica. (I)

Although quinone methides are often postulated as intermediates in the biosynthesis of many polyphenolic natural products, deploying their power in a laboratory setting to achieve similar bond constructions has sometimes proven challenging. Herein, a total synthesis of the resveratrol trimer vaticanol A has been achieved through three instances of quinone methide chemistry. These operations, one of which succeeded only under very specific conditions, expediently generated its [7,5]-carbocyclic core, afforded a unique sequence for dihydrobenzofuran formation, and concurrently generated, in addition to the target molecule, a series of diastereomers reflective of many other isolates.

The first total synthesis of the natural alkaloid amphorogynine C is reported (2.9 % overall yield in 20 steps). The key steps include a Claisen-Johnson rearrangement and an intramolecular azide-olefin cycloaddition, followed by a reduction of the resulting imine. The construction of the pyrrolizidine skeleton was achieved by an alkoxide-mediatedlactone ring opening and subsequent cyclization of a conveniently functionalized bicyclic amine. Finally, the proposed structure of amphorogynine C was confirmed by single-crystal X-ray diffraction analysis. The first synthesis of the representative pyrrolizidine alkaloid amphorogynine C is described. The key step includes an intramolecular azide-olefin cycloaddition reaction. The proposed structure of the natural product was confirmed by single-crystal X-ray diffraction analysis. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.