Synthesis of 2-Alkoxy Substituted Oligo- and Poly(1,4-phenyleneethylene)s and 2-Arylbenzofuranes by Applying the Siegrist Reaction

Article abstract of DOI:10.1002/prac.19943360205

Alkylation of 2-hydroxy-4-methylbenzaldehyde (1) yields the 2-alkoxy-4-methylbenzaldehydes (2a-l) which can be easily transformed to the Schiff bases 3a-l.The intermolecular self-condensation in a strongly alkaline medium leads to the oligo- and poly(1,4-