Results 11 to 20 of about 12,893 (216)
Allylation of aldehydes with various allylation agents
Results in ChemistryAllylation of aldehydes is one of the most important organic transformations that helps in the synthesis of compounds with special skeletons with unique medicinal properties.
Yavar Ahmadi
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The Enantioselective Tsuji Allylation [PDF]
Journal of the American Chemical Society, 2004 The first catalytic enantioselective examples of the Tsuji allylation using enol carbonates and enol silanes are described. The products possess a quaternary stereogenic center and are useful building blocks for synthetic chemistry.
Brian Stoltz, Douglas C Behenna
exaly +4 more sources
Allylation of Orthoquinones Towards Annulated Polycyclic Aromatic Systems
Molecules, 2018 Promising results of an efficient and convenient strategy for the annulation of polycyclic aromatic compounds (PACs), employing orthoquinones as starting material and comprising allylation, pinacol rearrangement, ring-closing metathesis (RCM), and one ...
Mariusz Kędziorek, Liliana Dobrzańska
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Ring-Retentive Allylation of Cyclopropanols Through Interception of Enolized Homoenolates by π-Allylpalladium. [PDF]
Angew Chem Int Ed EnglCyclopropanols undergo palladium‐catalyzed, zinc‐mediated allylation with allyl acetates: the ring opens transiently to an enolized homoenolate, is intercepted by π‐allylpalladium, and recloses to furnish β‐allylated cyclopropanols. This formal “allylic cyclopropylation” broadens the reaction space for ring‐retentive functionalization of cyclopropanols.
Tsukiji K, Miura S, Yoshikai N.
europepmc +3 more sources
Enabling Cross-Coupling Reactivity of α-Pentafluorosulfanyl Compounds with a Thermally Stable Organozinc α-SF<sub>5</sub> Reagent. [PDF]
ChemistryThis work describes the first example of a thermally stable α‐SF5 organometallic reagent, which allows for extensive downstream functionalization by allylation and acylation reactions under copper catalysis, as well as palladium‐catalyzed Negishi‐type cross‐coupling conditions up to 96% yield. In silico analysis shines initial light on the requirements
Xu L, Rombach D.
europepmc +2 more sources
Stereospecific Decarboxylative Allylation of Sulfones [PDF]
, 2016 Allyl sulfonylacetic esters undergo highly stereospecific, palladium-catalyzed decarboxylative allylation. The reaction allows the stereospecific formation of tertiary homoallylic sulfones in high yield.
Being J. Ka (2268721) +4 more
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Zinc-Catalyzed β-Allylation of Cyclopropanols via Enolized Homoenolate [PDF]
, 2021 We report herein a zinc-catalyzed β-allylation of cyclopropanols with Morita–Baylis–Hillman (MBH) carbonates with retention of the cyclopropane ring.
Naohiko, Yoshikai, Yoshiya, Sekiguchi
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Nature Communications, 2021 Allylation of nucleophiles with less reactive electrophiles, such as carbonates, usually requires a transition-metal catalyst. Here, the authors show a transition-metal-free allylation strategy with allyl ether electrophiles to form homoallylic amine ...
Guogang Deng +8 more
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Regiospecific Decarboxylative Allylation of Nitriles [PDF]
, 2016 Palladium-catalyzed decarboxylative α-allylation of nitriles readily occurs with use of Pd2(dba)3 and rac-BINAP. This catalyst mixture also allows the highly regiospecific α-allylation of nitriles in the presence of much more acidic α-protons.
Antonio Recio (1849078) +1 more
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Synthesis of Novel Crown Ether-Squaramides and Their Application as Phase-Transfer Catalysts
Molecules, 2021 This work presents the synthesis of six new phase-transfer organocatalysts in which the squaramide unit is directly linked to the nitrogen atom of an aza-crown ether.
Zsuzsanna Fehér +9 more
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