615269-85-7Relevant academic research and scientific papers
Oligo(1,4-phenylenepyrazole-3,5-diyl)s
Meier, Herbert,Hormaza, Angelina
, p. 3372 - 3377 (2003)
The bifunctional nucleophile methylhydrazine reacts in an alkaline medium in a regioselective mode with chalcones to yield 2-pyrazolines, which can be oxidized by DDQ to the corresponding 1H-pyrazoles. From oligo(chalcone)s this reaction yields cross-conjugated compounds with an alternating sequence of 1,4-disubstituted benzene rings and 3,5-disubstituted 1H-pyrazole rings. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.
Cross-conjugated oligomers from pyrrole, benzene and carbonyl building blocks
Hormaza, Angelina,Hinneschiedt, Sabine,Meier, Herbert
, p. 229 - 233 (2007/10/03)
Chalcones can serve as C2 or C3 components for the formation of 1H-pyrroles. In particular the reaction with tosylisocyanid could be applied to the oligochalcones 2d-g with up to 6 enone units. A series of cross-conjugated oligomers 8d-g was obtained; these compounds consist of a chain of 1,4-phenylene, carbonyl and 1H-pyrrole-3,4-diyl building blocks. The benzene rings bear two propoxy sidechains in order to enhance the solubility.
