Alkyllithium compounds containing cyclic amines and their use in polymerization
US5792820A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Feb 23, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F1/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An organolithium compound according to the present invention containing a cyclic amino group, has the general formula: ##STR1## wherein R.sub.1 is a divalent alkylene, an oxy- or amino-alkylene, or substituted alkylene having from 6 to about 20 carbon atoms; R.sub.2 is a linear-, branched-, or cyclo-alkylene having from about 2 to about 20 carbon atoms; and the lithium, Li, is bonded directly to a carbon atom of R.sub.2. A method of preparing an organolithium compound containing a cyclic amino group, comprising reacting a cyclic amino organo halide having the general formula ##STR2## where R.sub.1 and R.sub.2 are as above, and X is bromine or chlorine bonded directly to a carbon atom of R.sub.2, with a lithium reactant selected from lithium metal or an organolithium compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.