Chemetall Gmbh

Metallgesellschaft Aktiengesellschaft

Other

Albemarle Germany Gmbh

Rockwood Lithium Gmbh

Albemarle Corporation

Peter Rittmeyer

Ulrich Wietelmann

Uwe Lischka

Dieter Hauk

Ute Emmel

Dirk Dawidowski

Armin Stoll

Christopher Kurth

Stefan Scherer

Wilfried Weiss

Florian Kiefer

Alexander Murso

Rainer Aul

Steffen Haber

Johannes Willems

Annika Hörberg

Heinrich Noth

Stefan Schnippering

Andreas Schlegel

Heinrich Noeth

Steffen Thomas

Jens Roder

Johannes Klösener

Theresa Schmidt

Bernhard Füger

The object of the invention are solutions of alkali metal amides MNRR, wherein M is an alkali metal selected from Li, Na, K, Rb, Cs; Rand Rindependently of one another are linear, branched or cyclic alkyl groups having 1 to 8 C atoms or together are a cycloalkyl radical, the alkali metal amides being present in methyltetrahydropyran or in a solvent mixture containing methyltetrahydropyran, and processes for their preparation.

Stable alkali amide solutions and processes for preparing same

The invention relates to powdery, highly reactive alkali and alkaline earth hydride compounds, and to mixtures with elements of the third main group of the periodic table of elements (PTE) and to the preparation thereof by reacting alkali or alkaline earth metals in the presence of finely dispersed metals or compounds of the third main group of the PTE, wherein the latter have one or more hydride ligands or said hydride ligands are converted in situ, under the prevailing reaction conditions, i.e., in the presence of hydrogen gas or another H source, into hydride species, and to the use thereof for the preparation of complex hydrides and organometallic compounds.

Highly reactive metal hydrides, process for their preparation and use

This invention provides a method for producing organometallic compounds RM (M=alkali or alkaline earth element, R=alkyl residue) where n=valence of the metal M- and R=alkyl residue with 2 to 18 C atoms. In the method of this invention, an olefin is hydrometalated in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1.

Method for producing metal organyls

This invention provides a method for producing organometallic compounds RM (M=alkali or alkaline earth element, R=alkyl residue) where n=valence of the metal M and R=alkyl residue with 2 to 18 C atoms. In the method of this invention, an olefin is hydrometalated in an alkyl methyl ether, or in a solvent mixture containing an alkyl methyl ether, by means of the metal M and in the presence of a hydrogen source and in the presence of a transition metal catalyst, wherein the molar ratio between alkyl methyl ether and metal M is at least 0.01:1 and at most 50:1.

The invention relates to a method for producing aprotic solutions that contain zinc bromide and lithium bromide, the reaction of the reactants to the product being carried out as a one-pot reaction.

Method for producing aprotic solutions that contain zinc bromide and lithium bromide

A method for manufacturing amidomagnesium halogenides and admixtures thereof with alkali metal salts in aparotic, organic solvents, compounds obtained according to the method and use thereof in synthesis chemistry, for example for deprotonizing enolizable systems, functionalized aromatics and heteroaromatics.

Method for manufacturing magnesium amides

An organomagnesium synthesis agent, a process for preparing this synthesis agent, and its use.

Organomagnesium synthesis agent

The invention relates to a process for preparing metal difluorochelatoborates, in which a metal bis(chelato)borate of the formula M[BL] is reacted with boron trifluoride and a metal fluoride (MF) and/or a metal salt of the chelating ligand (ML) where M+ is a monovalent cation selected from the group consisting of lithium, sodium, potassium and ammonium NR, where R&#x2550;H, alkyl (C1 to C8) and L is a chelating agent having two terminal oxygen atoms and having the general formula (II), where: when m=1 and Yand Ytogether with Cform a carbonyl group, n=0 or 1 and o=0 or 1 and Rand Rare each, independently of one another, H or alkyl having from one to eight carbon atoms (C1-C8) and Y, Yare each, independently of one another, OR(R&#x2550;C1-C8-alkyl), then n or o&#x2260;1: p=0 or 1 and when n and o=0, p=1; or Y, Y, Y, Yare each, independently of one another, OR(R&#x2550;C1-C8-alkyl), m=1, n=0 or 1, o=1 and p=0; or Cand Care members of a 5- or 6-membered aromatic or heteroaromatic ring (with N, O or S as heteroelement) which can optionally be substituted by alkyl, alkoxy, carboxy or nitrile, where R, R, Yand Yare absent, m=0 or in the case of 1, Yand Ytogether with Cform a carbonyl group and p is 0 or 1, in an organic, aprotic solvent. 

Process for preparing metal difluorochelatoborates and use as battery electrolytes or additives in electrochemical cells

The invention relates to a method for producing amido-zinc halides as adducts with alkali-metal halides (RRN&#x2014;ZnY*LiY) in aprotic organic solvents, in which a) a primary or secondary amine dissolved in an aprotic organic solvent is provided, b) a lithium base (RLi) is added in a metered manner, and c) a ZnYis subsequently added.

Method for producing amido-zinc halide/alkali-metal halide compounds

The invention relates to a novel process for preparing lithium sulfide and to the use thereof, wherein a reaction of lithium-containing strong bases with hydrogen sulfide is undertaken in an aprotic organic solvent within the temperature range from &#x2212;20 to 120&#xb0; C. under inert conditions. The lithium sulfide obtained by the process is used as a positive material in a galvanic element or for the synthesis of Li ion-conductive solids, especially for the synthesis of glasses, glass ceramics or crystalline products.

Process for preparing lithium sulfide

The present invention relates to a process for the preparation of lithium alcoholates solution.

Process for the preparation of lithium alcoholate solutions

A method for producing functionalized CH-acidic five-ring heterocycles, the resultant five-ring heterocycles and the use thereof for producing pharmaceuticals and crop protection preparations.

Method for the production of functionalized five-ring heterocycles, and use thereof

A synthesis agent containing methyllithium and lithium bromide is described, in which MeLi and LiBr are dissolved in a solvent of the general formula (I) wherein Rand Rindependently of one another are H, methyl (Me) or ethyl (Et), and Rand Rare Me or Et,the molar ratio of LiBr to MeLi being at least 0.7 and not more than 1.5 and the methyllithium concentration being at least 4 wt. %.

Synthesis agent containing methyllithium/lithium bromide, and process for the preparation thereof

A method of preparing magnesium alcoholates Mg(OR) (where R&equals;alkyl residue having 2 to 10 carbon atoms) is described. Addition products of 1,3-dienes to magnesium metal in a polar, aprotic solvent are reached with an alcohol R&mdash;OH.

Method of preparing magnesium alcoholates

The invention relates to a method of lithiating CH-acidic five-membered heterocycles whereby the five-membered heterocycle is reacted with metallic lithium in an ether-containing solvent in the presence of an H acceptor.

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Sulzbach/Taunus, Germany

Peter Rittmeyer