PROCESS FOR PREPARING 1,3-BIS-(SILYL)-1,3-DIAZA-2-SILACYCLOALKANES

摘要

1,165,337. Functional fluids. MONSANTO CO. 9 Nov., 1966 [9 Nov., 1965], No. 50270/66. Addition to 1,156,881. Heading C5F. [Also in Division C3] Liquids resistant to high temperatures for hydraulic oils, heat transferring fluids, lubricants and additives to lubricants comprise compounds of the general formula wherein n is zero or an integer; RSP1/SP, RSP2/SP and RSP3/SP taken individually are the same or different and represent substituted or unsubstituted hydrocarbyl groups of which, when n is zero, at least one must have 2 or more carbon atoms, or heterocyclic groups having up to 24 carbon atoms, or corresponding groups attached to silicon via an oxygen atom; RSP1/SP and RSP2/SP if taken together with a silicon atom may form a heterocyclic residue; RSP3/SP, and if n is zero, RSP1/SP and RSP2/SP may represent halogen atoms ; and RSP4/SP signifies a substituted or unsubstituted divalent hydrocarbyl or heterocyclic group, a di- or poly-(hydrocarbylene ether group, or an ether group with -O- replaced by -S-, -NH-, -NRSP1/SP-, -NS-RSP1/SPRSP2/SPRSP3/SP-, -S: RSP1/SPRSP2/SP-, -SO-, -SO 2 -, the divalent group having the two nitrogen atoms of the diazasilacycloalkane ring in 1,2-, 1,3-, ortho or peri position.