Selective oxidation of isoeugenol to licarin A using CuFe2O4 catalysts under mild conditions

Article Chemistry, Organic

GOLD-CATALYZED FORMAL [3+2] CYCLOADDITION OF p-QUINONES AND 1-PHENYLPROPENES IN IONIC LIQUID: ENVIRONMENTALLY FRIENDLY AND STEREOSELECTIVE SYNTHESIS OF 2,3-DIHYDROBENZOFURAN NEOLIGNANS

Nobuyoshi Morita et al.

Summary: The study demonstrates a gold(III)-catalyzed formal [3+2] cycloaddition of p-quinones with 1-phenylpropenes in the ionic liquid [EMIM][NTf2], leading to the stereoselective synthesis of 2,3-dihydrobenzofuran neolignans in good yields. The gold catalyst/ionic liquid system can be recycled at least five times, highlighting its potential for sustainable and efficient chemical reactions.

HETEROCYCLES (2021)

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Article Chemistry, Multidisciplinary

Optimization of the Reaction Conditions for the Synthesis of Dihydrobenzofuran Neolignans

Herbert J. Dias et al.

Summary: Optimization of experimental conditions for the silver(I)-promoted oxidative coupling of methyl p-coumarate and methyl ferulate resulted in the best balance between conversion and selectivity, with acetonitrile as a greener solvent for the reaction. The use of silver(I) oxide as the oxidant agent and the reduced reaction time from 20 to 4 hours without significant impact on conversion and selectivity were key findings of the study.

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY (2021)

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Article Chemistry, Applied