Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solvent

A variety of knoevenagel compounds from isatin were synthesized using an eco-friendly methodology. It was used only the binary solvent ethanol: water (3:7 v/v) without the presence of metal catalyst what enabled the reaction between different isatins with malononitrile in a quick reaction time of 2–...

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Main Authors: João Marcos Gomes de Oliveira Ferreira, Girlyanderson Araújo da Silva, Maísa Cavalcanti Coelho, Claudio Gabriel Lima Junior, Juliana Alves Vale
Format: Article
Language:English
Published: Elsevier 2021-01-01
Series:Results in Chemistry
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2211715621000400
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author João Marcos Gomes de Oliveira Ferreira
Girlyanderson Araújo da Silva
Maísa Cavalcanti Coelho
Claudio Gabriel Lima Junior
Juliana Alves Vale
author_facet João Marcos Gomes de Oliveira Ferreira
Girlyanderson Araújo da Silva
Maísa Cavalcanti Coelho
Claudio Gabriel Lima Junior
Juliana Alves Vale
author_sort João Marcos Gomes de Oliveira Ferreira
collection DOAJ
description A variety of knoevenagel compounds from isatin were synthesized using an eco-friendly methodology. It was used only the binary solvent ethanol: water (3:7 v/v) without the presence of metal catalyst what enabled the reaction between different isatins with malononitrile in a quick reaction time of 2–5 min and isolated yields 80–96%. When cyanoesters were used as methylene actives, the reactions were longer and the knoenevagel products were obtained 79–92% isolated yields.
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spelling doaj.art-1eed5d0f1bc04995a83e3c5359b18b132022-12-21T20:21:24ZengElsevierResults in Chemistry2211-71562021-01-013100135Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solventJoão Marcos Gomes de Oliveira Ferreira0Girlyanderson Araújo da Silva1Maísa Cavalcanti Coelho2Claudio Gabriel Lima Junior3Juliana Alves Vale4Departamento de Química, Universidade Federal da Paraíba, 58051-970 João Pessoa, PB, BrazilDepartamento de Química, Universidade Federal da Paraíba, 58051-970 João Pessoa, PB, BrazilDepartamento de Química, Universidade Federal da Paraíba, 58051-970 João Pessoa, PB, BrazilDepartamento de Química, Universidade Federal da Paraíba, 58051-970 João Pessoa, PB, BrazilCorresponding author.; Departamento de Química, Universidade Federal da Paraíba, 58051-970 João Pessoa, PB, BrazilA variety of knoevenagel compounds from isatin were synthesized using an eco-friendly methodology. It was used only the binary solvent ethanol: water (3:7 v/v) without the presence of metal catalyst what enabled the reaction between different isatins with malononitrile in a quick reaction time of 2–5 min and isolated yields 80–96%. When cyanoesters were used as methylene actives, the reactions were longer and the knoenevagel products were obtained 79–92% isolated yields.http://www.sciencedirect.com/science/article/pii/S2211715621000400Knoevenagel condensationBinary mixtureIsatin
spellingShingle João Marcos Gomes de Oliveira Ferreira
Girlyanderson Araújo da Silva
Maísa Cavalcanti Coelho
Claudio Gabriel Lima Junior
Juliana Alves Vale
Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solvent
Results in Chemistry
Knoevenagel condensation
Binary mixture
Isatin
title Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solvent
title_full Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solvent
title_fullStr Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solvent
title_full_unstemmed Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solvent
title_short Quick synthesis of isatin-derived knoevenagel adducts using only eco-friendly solvent
title_sort quick synthesis of isatin derived knoevenagel adducts using only eco friendly solvent
topic Knoevenagel condensation
Binary mixture
Isatin
url http://www.sciencedirect.com/science/article/pii/S2211715621000400
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