Efficient esterification of eugenol using a microwave-activated waste kaolin

Oliveira, Alex de; Oliveira, Dênio Ramam Carvalho de; Angélica, Rômulo Simões; Andrade, Eloísa Helena de Aguiar; Silva, Joyce Kelly do Rosário da; Filho, Geraldo Narciso da Rocha; Coral, Natasha; Pires, Luíza Helena de Oliveira; Luque, Rafael; Nascimento, Luís Adriano Santos do

doi:10.1007/s11144-020-01797-6

Cited by 13 publications

(1 citation statement)

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“…Esters belongs to an important class of chemical compounds, which are crucial starting materials [5a–d] for drugs, lubricants, skin care products, detergents, plasticizers, surfactants and building blocks. Esters also extensively uses as flavor, fragrance, additive, functional materials for industries [6] as well as important constituent of many natural products, lipids, pheromones and other biologically active compounds [7] and the main components of biodiesel [8] .…”

Section: Introductionmentioning

confidence: 99%

Dual Activation of Carboxylic Acid Functionality by Protic Ionic Liquid: Solvent and Metal Free Strategy for Selective Esterification of Alcohols and Acylation of Aromatic Amines

Das

Majumdar

2022

ChemistrySelect

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Highly efficient and chemoselective esterification of alcohols and acylation of aromatic amines with carboxylic acids using imidazolium based protic ionic liquid, 1-butyl-imidazolium trifluoroacetate ([HBIm]TFA) as activator has been realized under organic volatile solvent free condition. The protic ionic liquid played dual role for activation of carboxylic acid which was proved by NMR study. A very interesting aspect of the present protocol is the acylation of less basic aromatic amines than the more reactive aliphatic amines as the later one forms salt with carboxylic acid. Our methodology offers several advantages like high yield, fast, efficient, chemo-selectivity, metal and other coupling agent free procedure, recyclability of ionic liquid used and formation of water as the only byproduct.

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Section: Introductionmentioning

confidence: 99%