Barbier Reaction
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Mechanistic study of the synthesis of alquilfenilselenetos, the reaction type Zn-Barbier aqueous vehicle / Estudo mecanístico da síntese de alquilfenilselenetos, pela reação tipo Zn-Barbier em meio aquoso
Alkyl phenyl selenides are versatile synthetic intermediates. In addition to the traditional methods, a method of synthesis was developed by Bieber by reacting diphenyl diselenide with organic halides using zinc dust in water / acetonitrile for a wide range of substrates. The lack of precedents in the understanding of this reaction limits the choice of the c
Publicado em: 2009
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2. ReaÃÃo de alilaÃÃo do tipo Barbier de benzaldeidos substituÃdos mediada por estanho em meio aquoso
O estudo de reaÃÃes organometÃlicas ganhou novo impulso, a partir da dÃcada de 1980, com a descoberta de que algumas dessas reaÃÃes mediadas por metais poderiam ser realizadas na presenÃa de Ãgua. A partir de entÃo, a reaÃÃo de Barbier tem sido uma das mais estudadas com diversos metais, destacando-se o, Ãndio, zinco e estanho. Neste trabalho, a
Publicado em: 2007
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3. Estabilidade à radiaÃÃo gama do poli(cloreto de vinila) aditivado e do poli(cloreto de vinila) quimicamente modificado
Poly (vinyl chloride)-PVC is a polar thermoplastic polymer compatible with a wide array of additives, which is used in several practical applications. Among the products made of PVC there are medical devices which need to be sterilized through gamma irradiation. In this work a study was made to evaluate the stability to gamma radiation of PVC additivated, as
Publicado em: 2004
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4. Studies on the chronic phase of adjuvant arthritis: effect of SR 41319, a new diphosphonate.
We studied the course of adjuvant arthritis in rats by measuring clinical, biochemical, and histological parameters on day 36 after induction (representing the secondary reaction) and on day 171, which is at the stage of permanent deformity. The effect of SR 41319, a new diphosphonate, was evaluated on days 36 and 171, after three weeks of treatment (days 14