Substituted 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazoles

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Authors	TENORA Lukáš GALETA Juraj MAN Stanislav VALOUŠKOVÁ Aneta POTÁČEK Milan
Year of publication	2012
Type	Conference abstract
MU Faculty or unit	Faculty of Science
Citation
Description	We report here two synthetic pathways leading to substituted 5,6-dihydro-4H-pyrrolo[1,2-b]pyrazoles. The first procedure starts from g-butyrolactone, which is transformed to 6-chlorohex-1-en-3-one alternatively in 3 or 5 steps. In following 4 steps we are able to prepare final variosly substituted bicyclic compounds. The second route comprises thermally initiated intramolecular cyclizations of substituted homoallenyl azines to desired heterocycles.
Related projects:	Allenyl synthon in synthesis of heterocyclic compounds