THE PREPARATION OF SMALL RING COMPOUNDS CONTAINING SILICON. PART I. VINYL-HYDROGEN LIGAND EXCHANGE ON SILICON. PART II. THE PREPARATION AND ISOMERIZAATION OF MONOCYCLIC SILYLHYDRAZINES. PART III. ON THE ATTEMPTED SYNTHESIS OF THE 1,2-DISILACYCLOBUTANCE RING SYSTEM.
Abstract
The first example of vinyl-hydrogen ligand exchange at silicon, catalyzed by chloroplatinic acid, is described. The disproportionation of tri-p-tolylsilane to di-p-tolylsilane nand tetra-p-tolylsilane is shown to occur without isomerization to ortho, meta or benzyl isomers. The aluminum chloride catalyzed fragmentation of bid-1,2-(dimethylchlorosilyl) ethane and 1-triethylsilyl-2-dimethylchlorosilyethane is reported. (u) The preparation of 3, 3, 6,6-tetramethyl-1,2-diaza-3, 6-disilacyclohexane and 1-amino-2,2,5,5-tetramethyl-1-aza-2, 5-disilacyclopentane is described. The two compounds are shown to be in equilibrium at room temperature even in the absence of catalysts. 1,2-bis(trimethylsilyl)hydrazine is shown to be in equilibrium with 1,1-bis(trimethylsilyl) hydrazine, although thermal equilibration is relatively slow. The preparation of the 1,2-disilacyclobutane ringing system was attempted by (1) ring closure of bis-1,1-(chlorosilyl) ethanes with various metals and (2) oxidation of 3,3,6,6-tetramethyl-1, 2-diaza-3,6-disilacyclohexane and 1-amino-2,2,5,5-tetramethyl-1-aza-2, 5-disilacyclopentane with mercuric oxide and ethyl azodicarboxylate. The products obtained from these oxidations were characterized and their formation discussed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1966
- Accession Number
- AD0634735
Entities
People
- Colin G. Pitt
- Glem L. Roof
- Kenneth R. Skillern
Organizations
- RTI International