Process for the direct synthesis of organotin compounds and their use
US5258531A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1992 |
| Grant date | Nov 2, 1993 |
| Priority date | — |
| Expiry date | Jun 17, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/2208
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a process for the direct synthesis of organotin compounds of the formula EQU R.sub.n SnCl.sub.4-n wherein PA0 n=1-4, and, PA0 R=a linear or branched or cycloaliphatic alkyl having 4-18 C atoms, by reacting metallic tin with alkyl chlorides, characterized in that the reaction is carried out in the presence of amines of the general formula PA0 A) R.sup.1.sub.a N [(CH.sub.2 CH.sub.2 O).sub.m CH.sub.2 CH.sub.2 OR.sup.2 ].sub.3-a PA0 and/or ammonium chlorides of the formula PA0 B) R.sup.1.sub.b N [(CH.sub.2 CH.sub.2 O).sub.m CH.sub.2 CH.sub.2 OR.sup.2 ].sub.4-b.sup.Cl wherein PA1 a=0, 1 or 2; PA1 b=0, 1, 2 or 3; PA1 R.sup.1 =linear or branched or cycloaliphatic alkyl having 2 to 24 C atoms, aryl, alkyl aryl or substituted aryl and, if a=2, or b=2 or 3, the R.sup.1 groups may be the same or different; PA1 R.sup.2 =H, linear or branched alkyl having 1 to 20 C. atoms, aryl, substituted aryl or alkyl aryl; and PA1 m=1-20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.