Journal
PURE AND APPLIED CHEMISTRY
Volume 80, Issue 3, Pages 609-620Publisher
WALTER DE GRUYTER GMBH
DOI: 10.1351/pac200880030609
Keywords
catalysis; CC-coupling; chromophores; domino reactions; multicomponent reactions
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Functional pi-electron systems can be synthesized in a diversity-oriented fashion by applying multicomponent and domino reactions. Based upon alkyne activation by Sonogashira coupling, reactive triple or double bonds become the key functionality for sequential and consecutive synthesis of heterocycles, such as beta-amino vinyl nitrothiophenes, delta-amino propenylidene indolones, indolizines, furans, pyrroles, annelated 2-amino pyridines, and spirocyclic benzofuranones and indolones. All these chromophores and fluorophores possess peculiar properties such as nonlinear optical (NLO) activity, pH-sensitivity, distinct solid-state fluorescence, or large Stokes shifts.
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