Patent ID: 7208614

Claim:
A process for preparing aryllithium compounds of the formulae (IV) and (VI) comprising the steps of a. reacting at least one halogen compound (I) with lithium metal to form a lithium compound of the formula (II) b. reacting the lithium compound of formula (II) with aromatic compounds of the formulae (III) and/or (V) to deprotonate the aromatic compounds of formulae (III) and/or (V) and form lithium aromatics of formulae (IV) and/or (VI), wherein the steps a) and b) are carried out as a one-pot reaction, where R is methyl, a primary, secondary or tertiary alkyl radical having from 2 to 12 carbon atoms, alkyl substituted by a radical selected from the group consisting of phenyl, substituted phenyl, aryl, heteroaryl, alkoxy, dialkylamino, alkylthio and substituted or unsubstituted cycloalkyl having from 3 to 8 carbon atoms, Hal=fluorine, chlorine, bromine or iodine, X 1-4 are, independently of one another, each carbon or two adjacent radicals X 1-4 R 1-4 can together be O, or S; the radicals R 1-4 and the radical Z are substituents selected from the group consisting of hydrogen, methyl, primary, secondary or tertiary, cyclic or acyclic alkyl radicals having from 2 to 12 carbon atoms, substituted cyclic or acyclic alkyl groups, alkoxy, dialkylamino, alkylamino, arylamino, diarylamino, phenyl, substituted phenyl, alkylthio, diarylphosphino, dialkyiphosphino, dialkylaminocarbonyl or diarylaminocarbonyl, monoalkylaminocarbonyl or monoarylaminocarbonyl, CO 2 − , hydroxyalkyl, alkoxyalkyl, fluorine and chlorine, CN and heteroaryl or two adyacent radicals R 1-4 form an aromatic or aliphatic ring.