The twofoldHeckreaction of the vinylpyrroles 3a and 3b with the iodobenzenes 4a-c led to the linear pyrrole oligomers 5, 6, and 7. The synthesis of both symmetrical and unsymmetrical oligomers, such as 10a and 10b, was also accomplished by a Heckreaction of 8 and 9 and by a Heckreaction of 3a and 11 followed by a Wittig reaction and a second Heckreaction with 8. The pentacyclic oligomers 14 and
Synthesis of a Linear Oligomeric Styrylpyrrole Using Multiple Heck and Wittig Reactions
作者:Lutz F. Tietze、Gero Nordmann
DOI:10.1055/s-2001-11385
日期:——
The linear mixed oligomer 1 consisting of three pyrrole and four divinylbenzene moieties was synthesized by two twofold Heck and Wittig reactions in four steps starting from diiodopyrrole 2 and vinylpyrrole 6.