Silicon-carbon unsaturated compounds : XIV. Formation and reactions of 1,1,2,2-tetratolyl-3,4-bis[bis(trimethylsilyl)methylene]-1,2-disilacyclobutanes

https://doi.org/10.1016/S0022-328X(00)86745-5Get rights and content

Abstract

The photolysis of 1,1-di-o-tolyl-, 1,1-di-m-tolyl-and 1,1-di-p-tolyl-1-(trimethylsilylethynyl)trimethyldisilane gave the respective 1,1,2,2-tetratolyl-3,4-bis[(trimethylsilyl)methylene]-1,2-disilacyclobutanes. These compounds isomerized photochemically and thermally to give 1,1,2,2-tetratolyl-4,4-bis(trimethylsilyl)-3-[bis(trimethylsilyl)ethenylidene]-1,2-disilacyclobutanes in almost quantitative yield. The thermolysis of 1,1,2,2-tetra-m-tolyl- and 1,1,2,2-tetra-p-tolyl)-4,4-bis(trimethylsilyl)-3-[bis(trimethylsilyl)ethenylidene]-1,2-disilacyclobutane afforded two types of the 1,3-disilacyclobutane derivative, but 1,1,2,2-tetra-o-tolyl-4,4-bis(trimethylsilyl)-3-[bis(trimethylsilyl)ethenylidene]-1,2-disilacyclobutane yielded 1,1,3,3-tetra-o-tolyl-2,4-bis[bis(trimethylsilyl)ethenylidene]-1,3-disilacyclobutane as the sole product.

References (9)

  • D. Seyferth et al.

    J. Organometal. Chem.

    (1977)
  • C. Eaborn et al.

    J. Organometal. Chem.

    (1980)
  • K. Tamao et al.

    J. Organometal. Chem.

    (1971)
  • A.G. Brook et al.

    J. Amer. Chem. Soc.

    (1976)
There are more references available in the full text version of this article.

Cited by (0)

View full text