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Dipyreno- and diperyleno-anthracenes from glyoxylic Perkin reactions†
Parantap Sarkar,Fabien Durola,Harald Bock
Chemical Communications Pub Date : 06/28/2013 00:00:00 , DOI:10.1039/C3CC44044C
Abstract

Twofold Perkin condensation of 2,5-dibromophenylene-1,4-diacetic acid with arylglyoxylic acids followed by cyclo-dehydrobromination leads to dipyreno- and diperyleno-anthracene tetraesters and diimides. The imides show surprisingly large absorption shifts versus the esters, illustrating that electron-withdrawing substituents at the anthracene unit efficiently impart long wavelength absorption in such electron-deficient graphene nanoribbon fragments.

Graphical abstract: Dipyreno- and diperyleno-anthracenes from glyoxylic Perkin reactions
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