Patent · US Expired

Method for producing organo-alkali metal compounds

US6261482A · kind A · utility

2Cited by

3References

15Claims

0Family size

Assignee

Metallgesellschaft AG · DE

Inventors

Ulrich Wietelmann · Friedrichsdorf, DE
Peter Rittmeyer · Pocking, DE
Uwe Lischka · Frankfurt am Main, DE

Key dates

Filing date	Jan 3, 2000
Grant date	Jul 17, 2001
Priority date	—
Expiry date	Jan 3, 2020

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F1/02
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention relates to a method for producing organo alkali-metal compounds by reacting metal lithium, sodium or potassium with organic compounds containing at least one acidic CH bond in a solvent. The inventive method is characterized in that the reaction is carried out in the presence of a hydrogen acceptor, wherein 0.5 to 5 moles of the hydrogen acceptor are used per mole of acid hydrogen, which hydrogen can be replaced by lithium, sodium or potassium, whereby 1 to 3, moles of lithium, sodium or potassium are used per mole of acid hydrogen and the acid CH bond has a pK.sub.a value of 10 to 30. Cyclopentadiene, indene, fluorene and substitution products thereof, or monosubstituted alkynes or methane substitution products, are preferred CH acid organic compounds. Hydrocarbons used as hydrogen acceptors include these with at least one CC double bond in conjugation with either another CC double bond or with a monocyclic aryl radical.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.