Results 31 to 40 of about 17,027 (206)

Synthesis of Pyrroles Through the CuH-Catalyzed Coupling of Enynes and Nitriles [PDF]

, 2020
Herein, we describe an efficient method to prepare polysubstituted pyrroles via a copper-hydride (CuH)-catalyzed enyne-nitrile coupling reaction. This protocol accommodates both aromatic and aliphatic substituents and a broad range of functional groups ...
Luke T., Jesikiewicz, Luke T. Jesikiewicz (6083950), Lin Zhou (8708922), Zhou, Yujing, Lin, Zhou, Yujing Zhou (5951558), Jesikiewicz, Luke T, Stephen L. Buchwald (5950216), Peng Liu (6334385), Peng, Liu, Yujing, Zhou, Zhou, Lin, Buchwald, Stephen Leffler, Liu, Peng, Stephen L., Buchwald   +14 more
core   +1 more source

Remarkable Iodine-Catalyzed Synthesis of Novel Pyrrole- Bearing N-Polyaromatic β-Lactams

Molecules, 2010
Because of their interesting biological properties various methods for the synthesis of substituted pyrroles are described in the literature. However, synthesis of pyrroles fused with a β-lactam ring has not been reported.
Bimal K. Banik, Hector Aguilar, Isabel Salinas, Gildardo Rivera, Debasish Bandyopadhyay   +4 more
doaj   +1 more source

[3+2] Cycloaddition of Tosylmethyl Isocyanide with Styrylisoxazoles: Facile Access to Polysubstituted 3-(Isoxazol-5-yl)pyrroles

Molecules, 2017
A facile access to polysubstituted 3-(isoxazol-5-yl)pyrroles was developed through [3+2] cycloaddition of tosylmethyl isocyanide (TosMIC) and styrylisoxazoles.
Xueming Zhang, Xianxiu Xu, Dawei Zhang
doaj   +1 more source

Vibrations of pyrrole, N-substituted pyrroles, and their cations

Journal of Molecular Spectroscopy, 2021
The vibrations of pyrrole, N-deuteropyrrole, N-fluoropyrrole, N-aminopyrrole and N-methylpyrrole are studied. The evolution of the vibrational wavenumbers of pyrrole is examined, as the mass of the nitrogen-bonded hydrogen atom is artificially increased.
Alexander R. Davies, David J. Kemp, Timothy G. Wright   +2 more
openaire   +1 more source

Recent advances in the synthesis of pyrroles [PDF]

, 2020
Pyrroles are the most prevalent heterocyclic compounds, which are present as the basic cores in many natural products, such as vitamin B12, bile pigments like bilirubin and biliverdin, the porphyrins of heme, chlorophyll, chlorins, bacteriochlorins, and ...
Rasheed, Hina, Mukhtar, Asma, Awan, Rabiya Javed, Awan, Ramsha Javed, Iqbal, Sarosh, Moloney, Mark G   +5 more
core   +2 more sources

Novel Structural Hybrids of Pyrrole and Thiazole Moieties: Synthesis and Evaluation of Antibacterial and Antifungal Activities

Acta Chimica Slovenica, 2021
One of the best ways to design new biocidal agents is synthesizing hybrid molecules by combining two or more bioactive moieties in a single molecular scaffold.
Mohamed Salem, Samir Abbas, Marwa El-Sharief, Mohamed Helal, Moustafa Gouda, Mohammed Assiri, Mohammed Assiri, Tarik Ali, Tarik Ali   +8 more
doaj   +1 more source

The Adductomics of Isolevuglandins: Oxidation of IsoLG Pyrrole Intermediates Generates Pyrrole–Pyrrole Crosslinks and Lactams [PDF]

High-Throughput, 2019
Isoprostane endoperoxides generated by free radical-induced oxidation of arachidonates, and prostaglandin endoperoxides generated through enzymatic cyclooxygenation of arachidonate, rearrange nonenzymatically to isoprostanes and a family of stereo and structurally isomeric γ-ketoaldehyde seco-isoprostanes, collectively known as isolevuglandins (isoLGs).
Wenzhao Bi, Geeng-Fu Jang, Lei Zhang, John W. Crabb, James Laird, Mikhail Linetsky, Robert G. Salomon   +6 more
openaire   +2 more sources

An Efficient Synthesis of Aryl-Substituted Pyrroles by the Suzuki–Miyaura Coupling Reaction of SEM-Protected Pyrroles

Molecules, 2019
An efficient arylation of SEM-protected pyrroles by the Suzuki–Miyaura coupling reaction has been developed. The reaction can be carried out under mild conditions to provide aryl-substituted pyrroles in moderate to excellent yields.
Keli Cui, Meng Gao, Hongyi Zhao, Dongfeng Zhang, Hong Yan, Haihong Huang   +5 more
doaj   +1 more source

[3+3]-Annulation of Cyclic Nitronates with Vinyl Diazoacetates: Diastereoselective Synthesis of Partially Saturated [1,2]Oxazino[2,3-b][1,2]oxazines and Their Base-Promoted Ring Contraction to Pyrrolo[1,2-b][1,2]oxazine Derivatives

Molecules, 2023
A rhodium(II)-catalyzed reaction of cyclic nitronates (5,6-dihydro-4H-1,2-oxazine N-oxides) with vinyl diazoacetates proceeds as a [3+3]-annulation producing bicyclic unsaturated nitroso acetals (4a,5,6,7-tetrahydro-2H-[1,2]oxazino[2,3-b][1,2]oxazines ...
Yulia A. Antonova, Yulia V. Nelyubina, Sema L. Ioffe, Andrey A. Tabolin   +3 more
doaj   +1 more source

Synthesis of Polysubstituted Pyrroles [PDF]

, 2009
International audienceCross coupling metathesis reactions from two ethylenic compounds 4 and 5 easily led to Michael acceptors 6ab and 7a-b. Reaction of these compounds, or of enone 5, with p-toluenesulfonylmethyl isocyanide (TosMIC) provided the ...
Cornet, Julien, Dujardin, Gilles, Huet, François, Poulard, Céline, Dhal, Robert, Legoupy, Stéphanie   +5 more
core   +1 more source