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29 de may. de 2024 · A visible-light-induced photocatalyst-free acylative pyridylation of styrenes with 4-acyl-1,4-dihydropyridines (DHPs) and 4-cyanopyridines has been described, featuring mild reaction conditions, a broad substrate scope, and good functional group tolerance.
10 de may. de 2024 · An enantioselective hydroarylation reaction of styrenes and 1,3-dienes with arylboronic acids catalyzed by nickel complexes bearing chiral spiro aminophosphine ligands was reported.
17 de may. de 2024 · 2,3-Diaryl propanoic acids are important structures as a result of their widespread presence in numerous bioactive compounds. However, the limitations of existing synthetic techniques include the requirement for costly catalysts and limited substrates.
14 de may. de 2024 · Generally, the reaction favors electron-donating styrenes (3e‒3g, 3q, 3r, and 3w) and slightly decreased yields were observed for styrenes bearing electron-withdrawing group (3i, 3j, and...
Hace 6 días · It is noteworthy that, the scope of alkene substrates is not limited to styrenes; a variety of nonconjugated alkenes are also suitable reaction partners (Fig. 5, products 27–31).
16 de may. de 2024 · Encouraged by our prior success at establishing α- and β-carbonyl sterocenters through C–H activation ( 1, 8) and developing racemic γ-C–H arylation of carbocycles ( 28 ), we sought to develop chiral Pd catalysts capable of enantioselective remote γ- and δ-C–H functionalization to address this unmet need.
27 de may. de 2024 · Light-driven carboxylation offers a promising approach for synthesizing valuable fine chemicals under mild conditions. Here we disclose a heterogeneous photocatalytic strategy of C (sp2)‒H activation of formate for hydrocarboxylation of alkenes over zinc indium sulfide (ZnIn2S4) under visible light. This protocol functions well ...
