Manganese‐Catalyzed Multicomponent Synthesis of Pyrroles through Acceptorless Dehydrogenation Hydrogen Autotransfer Catalysis: Experiment and Computation
作者:Jannik C. Borghs、Luis Miguel Azofra、Tobias Biberger、Oliver Linnenberg、Luigi Cavallo、Magnus Rueping、Osama El‐Sepelgy
DOI:10.1002/cssc.201802416
日期:2019.7.5
A new base metal catalyzed sustainable multicomponent synthesis of pyrroles from readily available substrates is reported. The developed protocol utilizes an air‐ and moisture‐stable catalyst system and enables the replacement of themutagenic α‐haloketones with readily abundant 1,2‐diols. Moreover, the presented method is catalytic in base and the sole byproducts of this transformation are water and
Efficient [Cu(NHC)]-Catalyzed Multicomponent Synthesis of Pyrroles
作者:Tuan Thanh Dang、Abdul Majeed Seayad
DOI:10.1002/asia.201701045
日期:2017.9.19
Pyrrole-mania! A [Cu(NHC)] (NHC=N-heterocyclic carbene) catalyst efficiently converts readily available diols, ketones, β-amino alcohols, and amines to various substituted pyrroles through a two- or three-component reaction in up to 95 % isolated yield.
Multicomponent reactions in PEG-400: ruthenium-catalyzed synthesis of substituted pyrroles
作者:Srivari Chandrasekhar、Vidyavathi Patro、Lahu N. Chavan、Rambabu Chegondi、René Grée
DOI:10.1016/j.tetlet.2014.08.105
日期:2014.10
An efficient and eco-friendly method for the synthesis of substituted pyrroles has been developed via ruthenium-catalyzed multicomponent reaction of ketone, amine, and ethylene glycol in PEG-400 as solvent medium without using any external ligand. The catalytic system and solvent can be recycled with the same, as well as different, ketones with minimum loss of Ru-catalyst activity.