https://ria.asturias.es/RIA/handle/123456789/6368 2025-12-21T10:06:11Z https://ria.asturias.es/RIA/handle/123456789/10445 Title: Zinc‐Catalyzed Synthesis of Conjugated Dienoates through Unusual Cross‐Couplings of Zinc Carbenes with Diazo Compounds Authors: Mata García, Sergio; Vicente Arroyo, Rubén; López García, Luis Ángel; Gonzalez Rodríguez, Maria José; González Martínez, Jesús Abstract: Zinc‐catalyzed selective cross‐coupling of two carbene sources, such as vinyl diazo compounds and enynones, enabled the synthesis of conjugated dienoate derivatives. This reaction involved the unprecedented coupling of a zinc furyl carbene with vinyl diazo compounds through the γ‐carbon. Alternatively, dienoates were also prepared by a commutative cross‐coupling of zinc vinyl carbenes generated from cyclopropenes and simple diazo compounds. Description: En este artículo de investigación se describe el acoplamiento cruzado catalizado por cloruro de zinc entre diazocompuestos y vinil diazocompuestos con distintos precursores de carbenos como son los ciclopropenos y eninonas. 2016-11-30T00:00:00Z https://ria.asturias.es/RIA/handle/123456789/10447 Title: Zinc-Catalyzed Synthesis of Allylsilanes via Si–H Bond Insertion of Vinyl Carbenoids Generated from Cyclopropenes Authors: Mata García, Sergio; Vicente Arroyo, Rubén; López García, Luis Ángel Abstract: Allylsilanes have long been recognized as valuable building blocks for organic synthesis. A zinc‐catalyzed reaction of cyclopropenes and hydrosilanes provides a convenient route to these versatile unsaturated organosilanes. In this transformation, ZnBr2 serves as an efficient catalyst, allowing the generation of a zinc vinyl carbenoid intermediate, which is subsequently involved in a Si−H bond insertion. The process shows broad scope, and is amenable to substituted and functionalized cyclopropenes or the functionalization of polysiloxanes. Moreover, zinc‐catalyzed carbene insertion into a Ge−H bond is reported for the first time. Description: En este artículo de investigación se describe una metodología catalítica para la síntesis de alilsilanos a partir de ciclopropenos en presencia de cantidades catalíticas de bromuro de zinc. 2017-05-10T00:00:00Z https://ria.asturias.es/RIA/handle/123456789/8188 Title: Zinc-Catalyzed Multicomponent Reactions: Easy Access to Furyl- Substituted Cyclopropane and 1,2-Dioxolane Derivatives Authors: López García, Luis Ángel; Vicente Arroyo, Rubén; González, Jesús Abstract: An efficient synthesis of furyl-substituted cyclopropane derivatives through a zinc-catalyzed three component coupling of 1,3-dicarbonyl compounds, alkynals and alkenes are described.On the other hand, the synthesis of 1,2-dioxolane derivatives through a zinc-promoted aerobic oxidation of cyclopropane derivatives has been also developed. A four-component process yielding these cyclic peroxide derivatives has been also realized. Description: Reacciones multicomponentes catalizadas por sales de zinc. Acceso a ciclopropilfuranos y derivados de 1,2-dioxolanos. 2016-04-27T00:00:00Z https://ria.asturias.es/RIA/handle/123456789/8185 Title: Zinc-catalyzed multicomponent reactions: Straightforward synthesis of functionalized furan derivatives Authors: Mata García, Sergio; López García, Luis Ángel; Vicente Arroyo, Rubén Abstract: A sequence consisting of an initial zinc-catalyzed Knoevenagel condensation of and forms enynone. Then a 5-exo-dig cyclization takes place to give rise to 2-furyl-zinc carbene intermediate. A final cyclopropanation reaction or insertion into the Si-H bond would account for the formation of the final products Description: En el póster se describe la generación de ciclopropilfuranos y sililfuranos mediante metodologías multicomponente. 2016-06-27T00:00:00Z