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

Abstract: 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.

Abstract: 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 R1 and R2 independently of one another are H, methyl (Me) or ethyl (Et), and R3 and R4 are 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. %.

Abstract: 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 R1 and R2 independently of one another are H, methyl (Me) or ethyl (Et), and R3 and R4 are 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. %.

Abstract: A method of preparing magnesium alcoholates Mg(OR)2 (where R=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—OH.

Abstract: 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.

Abstract: This patent describes a solution of ethyllithium in dibutyl ether, a non-pyrophoric solution of ethyllithium in dibutyl ether in a concentration of 7 to 8%, a non-pyrophoric solution of ethyllithium in dibutyl ether and in a hydrocarbon in a concentration of 2 to 8%, process for preparing the solutions and the use of the solutions.

Abstract: A method of preparing magnesium alcoholates Mg(OR)2 (where R=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 reacted with an alcohol R—OH.

Abstract: This patent describes a solution of ethyllithium in dibutyl ether, a non-pyrophoric solution of ethyllithium in dibutyl ether in a concentration of 7 to 8%, a non-pyrophoric solution of ethyllithium in dibutyl ether and in a hydrocarbon in a concentration of 2 to 8%, process for preparing the solutions and the use of the solutions.

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 pKa 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.

Abstract: The invention relates to stable trimer isopropoxyalane of composition H5Al3(OiPr)4, wherein iPr is a (CH3)2CH radical. The invention also relates to a method for producing stable trimer isopropoxyalane, wherein AlH3 is reacted with Al(OiPr)3 or isopropanol in a molar ratio of 5:4 or 3:4 in a solvent or solvent mixture. The stable trimer isopropoxyalane is particularly suitable for use as a reducing agent in organic and inorganic synthesis, as a source for aluminium or aluminium oxide in the electronics or ceramics industry or to produce pigments.

Abstract: A process is disclosed for preparing a compound of the FormulaM (R.sup.1 R.sup.2 N.BH.sub.3)or a complex thereof of the FormulaM (R.sup.1 R.sup.2 N.BH.sub.3).xLwhereinM is Li, Na, K, Rb or Cs;R.sup.1 is H, an aliphatic C.sub.1 to C.sub.5 residue, an aromatic residue, or a cycloaliphatic residue;R.sup.2 is H, an aliphatic C.sub.1 to C.sub.5 residue, an aromatic residue, or a cycloaliphatic residue; orR.sup.1 and R.sup.2 form a common cyclic residue;L is a dipolar aprotic solvent; andx is a numerical value from 0.1 to 5, which comprises the steps of:(a) where the compound of the Formula M(R.sup.1 R.sup.2 N.BH.sub.3) is prepared, reacting a compound of the FormulaR.sup.1 R.sup.2 NH.BH.sub.3with an alkali metal or an alkali metal amide in a non-polar aliphatic or aromatic solvent; or(b) where the complex of the Formula M(R.sup.1 R.sup.2 N.BH.sub.3).xL is prepared, reacting the compound of the FormulaR.sup.1 R.sup.2 NH.BH.sub.

Abstract: Disclosed is a dissolved methyllithium-containing composition for use in synthesis reactions (synthesis composition) and processes of preparing the composition. In the sythesis composition the methyllithium is contained in a solvent of the general formula (I) ##STR1## wherein independently R.sup.1 and R.sup.2 are a hydrogen, methyl or ethyl residue and R.sup.3 and R.sup.4 are a methyl or ethyl residue. To prepare the methyllithium-containing synthesis composition of the invention lithium powder or granular lithium is dispersed in a solvent having the general formula I, methyl halide is added at a controlled rate, the reaction temperature is maintained in the range of from 0.degree. to 60.degree. C., and the resulting lithium halide is separated from the methyllithium solution.