Catalyzed hydrocarbyllithium process
US5340507A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1993 |
| Grant date | Aug 23, 1994 |
| Priority date | — |
| Expiry date | Mar 23, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/122
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A catalytic process for alkylating an alkali metal selected from lithium, sodium and potassium with an alkyl halide containing 3 to 20 carbon atoms comprising conducting the reaction in the presence of a catalytic compound represented by the formula EQU (RR.sup.1 R.sup.2 M.sup.a).sub.y A(R.sup.3).sub.x wherein R, R.sup.1 and R.sup.2 are independently selected from hydrogen, halogen, alkyl, alkenyl, cycloalkyl, and aryl groups, R.sup.3 is independently selected from alkyl groups containing 1 to 10 carbon atoms, alkylene groups containing 2 to 5 carbon atoms, aryl groups containing 6 to 18 carbon atoms, four to six-membered heterocyclic carbon containing groups containing one to two hetero atoms selected from oxygen, nitrogen, and sulfur; hydroxyalkyl, alkoxyalkyl and monoalkylaminoalkyl and dialkylaminoalkyl groups containing 2 to 13 carbon atoms; M.sup.a is selected from silicon, carbon, germanium, and tin, A is selected from oxygen, sulfur, nitrogen and phosphorus, and x and y independently have values from zero to three.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.