Direct C—H Arylation of 3-Methoxythiophene Catalyzed by Pd. Application to a more Efficient Synthesis of π-Alkoxy-oligothiophene Derivatives.

The direct regioselective C-H arylation of 3-methoxythiophene and 3,4-ethylenedioxythiophene (EDOT) was performed successfully under 'Heck-type' experimental conditions. This novel synthetic methodology has been used to prepare in a more simple way a series of oligothiophenes interesting for the electronic industry to build new synthetic organic materials. (c) 2006 Elsevier Ltd. All rights reserved.