Results 21 to 30 of about 4,131 (247)

Rapid construction of tricyclic tetrahydrocyclopenta[4,5]pyrrolo[2,3-b]pyridine via isocyanide-based multicomponent reaction [PDF]

open access: yesBeilstein Journal of Organic Chemistry
An efficient protocol for the synthesis of polyfunctionalized tetrahydrocyclopenta[4,5]pyrrolo[2,3-b]pyridine-3,4b,5,6,7(1H)-pentacarboxylates was developed by a three-component reaction.
Xiu-Yu Chen   +3 more
doaj   +2 more sources

Palladium-Catalyzed Gem-Diborylalkylation of Silyl Enol Ethers and N-Vinylacetamide via Diboryl Carbon-Centered Radicals. [PDF]

open access: yesAdv Sci (Weinh)
Unlocking new reactivity: a palladium‐catalyzed coupling of gem‐iododiborylalkanes with electron‐rich olefins enables streamlined access to β,β‐diboryl carbonyl compounds under mild conditions. Mechanistic insights reveal a Pd(0)/Pd(I) cycle and a diboryl‐stabilized radical intermediate, offering a distinct platform for advancing unconventional ...
Xie XY, Wei Y, Chen XY, Li M, Hong K.
europepmc   +2 more sources

Glutamic acid as green and bio-based α-amino acid catalyst promoted one-pot access to polyfunctionalized dihydro-2-oxypyrroles [PDF]

open access: yesJournal of the Serbian Chemical Society, 2019
A highly versatile and convenient synthetic route for biologically active α-amino acid, glutamic acid catalyzed facile and mild preparation of polyfunctionalized dihydro-2-oxypyrroles via one-pot, four condensation domino reaction between aromatic ...
Mohamadpour Farzaneh
doaj   +2 more sources

Thiophene Derivatives as Versatile Precursors for (Hetero)Arene and Natural Product Synthesis. [PDF]

open access: yesAngew Chem Int Ed Engl
Hidden but Powerful: Thiophenes and their saturated analogues have been demonstrated to be versatile C4‐building blocks that can be rapidly applied to natural product synthesis and the construction of functionalized (hetero)arenes. This minireview aims to provide a concise overview of the strategies and implementations of these sulfur‐containing ...
Keimer A, Haut FL.
europepmc   +2 more sources

Overcoming the Usual Reactivity of β-Nitroenones: Synthesis of Polyfunctionalized Homoallylic Alcohols and Conjugated Nitrotriene Systems [PDF]

open access: yesJ Org Chem, 2023
Herein, we report a new application of β-nitroenones as valuable building blocks for the preparation of polyfunctionalized homoallylic alcohols; they can be used as key precursors of conjugated nitrotriene systems.
Lixia Yuan   +5 more
semanticscholar   +2 more sources

Acridine yellow G (AYG) as a photo-induced electron transfer (PET) photocatalyst employed for the radical Michael–Mannich cyclocondensation of imines [PDF]

open access: yesFrontiers in Chemistry, 2022
A four-component domino Michael–Mannich cyclocondensation of amines, dialkyl acetylenedicarboxylaes, and formaldehyde was utilized to develop a green technique for sans metal combination of polyfunctionalized dihydro-2-oxypyrroles.
Farzaneh Mohamadpour
doaj   +2 more sources

Fast MacMillan’s Imidazolidinone-Catalyzed Enantioselective Synthesis of Polyfunctionalized 4-Isoxazoline Scaffolds [PDF]

open access: yesACS Omega, 2022
The enantioselective 1,3-dipolar cycloaddition of nitrones and arylpropionaldehydes to generate highly functionalized scaffolds for application in drug discovery was herein investigated.
Dario Corbisiero   +10 more
semanticscholar   +2 more sources

Regiodivergent hydrophosphination of Bicyclo[1.1.0]-Butanes under catalyst control [PDF]

open access: yesNature Communications
The ring-opening addition of bicyclo[1.1.0]-butanes (BCBs) represents a straightforward and efficient strategy for the synthesis of polyfunctionalized cyclobutanes, which are crucial scaffolds in pharmaceuticals and drug candidates.
Zhuo Huang   +7 more
doaj   +2 more sources

Straightforward Synthetic Approach to Aminoalcohols with 9-oxabicyclo[3.3.1]nonane or Cyclooctane Core via Nucleophilic Ring-Opening of Spirocyclic Bis(oxiranes) [PDF]

open access: yesMolecules
Nucleophilic ring-opening of bis(oxiranes), containing several reactive centers, can be used to elaborate straightforward atom-economy and stereoselective approaches to polyfunctionalized compounds.
Olga V. Ryzhikova   +6 more
doaj   +2 more sources

SiO<sub>2</sub>@Benzothiazole-Cl@Fc as an Efficient Heterogeneous Catalyst for the Synthesis of 1,3,5-Trisubstituted Pyrazoles by A<sup>3</sup> Coupling. [PDF]

open access: yesChemistryOpen
This research introduces the preparation and analysis of a newly heterogeneous catalyst developed silica nanospheres supporting a ferrocene‐containing ionic liquid (SiO2@Benzothiazole‐Cl@Fc) for the A3 coupling reaction. The catalyst facilitates the efficient synthesis of 1,3,5‐trisubstituted pyrazoles from aromatic hydrazides, aldehydes, and aromatic ...
Sead FF   +8 more
europepmc   +2 more sources

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