Multicomponent Synthesis of 4-Aryl-4,9-dihydro-1<i>H</i>-pyrazolo[3,4-<i>b</i>]quinolines Using L-Proline as a Catalyst—Does It Really Proceed?

Looking for effective synthetic methods for 1<i>H</i>-pyrazolo[3,4-<i>b</i>]quinolines preparation, we came across a procedure where, in a three-component reaction catalysed by L-proline, 4-aryl-4,9-dihydro-1<i>H</i>-pyrazolo[3,4-<i>b</i>]quinolines are formed. These compounds can be easily oxidised...

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Autori principali:	Andrzej Danel, Elżbieta Porębska, Kacper Markiel, Oleksii Havrysh, Mateusz Kucharek, Arkadiusz Gut, Tomasz Uchacz
Natura:	Artigo
Lingua:	Inglês
Pubblicazione:	MDPI AG 2023-11-01
Serie:	Molecules
Soggetti:	4-aryl-4,9<i>H</i>-3-methyl-1-phenyl-1<i>H</i>-pyrazolo[3,4-<i>b</i>]quinoline multi-component reactions L-proline 4,4-(phenyl-methylene)-bis-(3-methyl-1-phenylpyrazol-5-oles)
Accesso online:	https://www.mdpi.com/1420-3049/28/22/7612
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