Synthesis

Synthesis and reactions of silylated and stannylated 1, 2-azoles

…, P Cuadrado, AM González-Nogal, R Valero

Index: Calle; Cuadrado; Gonzalez-Nogal; Valero Synthesis, 2001 , # 13 p. 1949 - 1958

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Citation Number: 5

Abstract

Abstract Silicon or tin 4-metalated pyrazoles and isoxazoles are synthesized by silyl-or stannylcupration from 4-haloazoles. On the other hand, 5-metalated pyrazoles are prepared by reaction of 5-unsubstituted pyrazoles with LDA and subsequent treatment with chlorosilanes and chlorostannanes. Furthermore, starting from 5-unsubstituted 4- halopyrazoles and applying both methodologies, 4, 5-dimetalated pyrazoles bearing silyl ...