Saltigo Gmbh

Antje Hieronymi

Lars Rodefeld

Michael Kreis

Guido Giffels

Andreas Job

Ralf Krahwinkel

Witold Broda

Oliver Krebs

Andreas Martin

Denys Baskakov

What is described is a process for preparing compounds of the general formula (I) in which R, Rand Rindependently of one another represent hydrogen, an alkyl group or an aryl group, wherein compounds of the general formula (II) in which Rand Rhave the meaning given for formula (I),are reacted with an alkylating agent of the general formula (III)RX&#x2003;&#x2003;(III),in which X represents a halogen atom and Rhas the meaning given for formula (I), if appropriate in a solvent.

Process for preparing quaternary salts of piperidyl esters of mandelic acid

A process is described for the preparation of substituted heteroaromatics of the general formula (I)    Likewise described is the use of cycloalkyl alkyl ethers, in particular cyclopentyl methyl ether, in the Kumada reaction for the preparation of substituted heteroaromatics, in particular substituted thiophenes.

Process for the preparation of substituted heteroaromatics

What is described is a process for brominating alkylthiophene, in which an alkylthiophene of the general formula (I) whereR is a branched or unbranched alkyl radical having 1 to 12 carbon atomsis contacted with stoichiometric amounts of HBr and HO, optionally in the presence of a solvent.

Process for brominating alkylthiophenes

Growing community of inventors

Kö'ln, Germany

Antje Hieronymi