3652-45-7Relevant articles and documents
Sonochemically assisted synthesis of N-substituted pyrroles catalyzed by ZnO nanoparticles under solvent-free conditions
Shahvelayati, Ashraf S,Sabbaghan, Maryam,Banihashem, Solmaz
, p. 1123 - 1129 (2017/05/10)
Abstract: An efficient and rapid synthesis of 1,2,3,5-tetrasubstituted pyrrole derivatives from a one-pot multicomponent reaction of amines, 1,3-dicarbonyl compounds, and α-haloketones in the presence of ZnO nanoparticles catalyst under ultrasonic irradiation and solvent-free conditions is described. Graphical abstract: [Figure not available: see fulltext.].
Three-component access to pyrroles promoted by the CAN-silver nitrate system under high-speed vibration milling conditions: A generalization of the Hantzsch pyrrole synthesis
Estevez, Veronica,Villacampa, Mercedes,Menendez, J. Carlos
supporting information, p. 591 - 593 (2013/02/22)
A sequential multicomponent process involving the high-speed vibration milling of ketones with N-iodosuccinimide and p-toluenesulfonic acid, followed by addition of a mixture of primary amines, β-dicarbonyl compounds, cerium(iv) ammonium nitrate and silver nitrate afforded polysubstituted, functionalized pyrroles. This one-pot, solid-state process can be considered as the coupling of an α-iodoketone preparation with a general version of the classical Hantzsch pyrrole synthesis.
One-step continuous flow synthesis of highly substituted pyrrole-3-carboxylic acid derivatives via in situ hydrolysis of tert-butyl esters
Herath, Ananda,Cosford, Nicholas D. P.
supporting information; experimental part, p. 5182 - 5185 (2011/02/27)
The first one-step, continuous flow synthesis of pyrrole-3-carboxylic acids directly from tert-butyl acetoacetates, amines, and 2-bromoketones is reported. The HBr generated as a byproduct in the Hantzsch reaction was utilized in the flow method to hydrolyze the t-butyl esters in situ to provide the corresponding acids in a single microreactor. The protocol was used in the multistep synthesis of pyrrole-3-carboxamides, including two CB1 inverse agonists, directly from commercially available starting materials in a single continuous process.