A green and efficient procedure for one-pot synthesis of xanthenes and acridines using silica boron–sulfuric acid nanoparticles (SBSANs) as a solid Lewis-protic acid

Khalafi-Nezhad, Ali; Panahi, Farhad; Mohammadi, Somayeh; Foroughi, Habib Ollah

doi:10.1007/s13738-012-0140-1

Cited by 18 publications

(7 citation statements)

References 55 publications

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“…46 Outro corante preparado é o derivado acridina chamado benzoflavina, obtido através da reação do benzaldeído com m-toluenodiamina. 47 Na indústria farmacêutica, o benzaldeído é utilizado como intermediário sintético do cloranfenicol, ampicilina, difenilidantoina, efedrina, dentre outros. No caso da efedrina (20), esta é formada através da biocatálise industrial, que ocorre a partir da sua fermentação juntamente com a dextrose, que origina o fenilacetilcarbinol ((R)-PAC) (21).…”

Section: Aplicações Industriaisunclassified

Benzaldehyde (CAS 100-52-7)

Leite¹

2020

Rev. Virtual Quim.

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Benzaldehyde is a compound of great importance in industry such as chemical, pharmaceutical and food industry, as a synthetic precursor or reagent. Examples of applications of benzaldehyde include food and perfume flavoring, cosmetic dyes, fuel and fuel additive, plasticizers and water treatment. This article presents the main industrial synthesis process of benzaldehyde and some reactions involving this substance, in addition to its applications and toxicity. O benzaldeído é um composto de grande aplicação em diferentes setores da indústria química, farmacêutica e de alimentos, como precursor sintético ou reagente. Como exemplos de aplicações do benzaldeído, têm-se flavorizante de alimentos, aromatizante de perfumes e corantes de cosméticos, combustível e aditivo de combustível, plastificantes e tratamento de água. Este artigo apresenta o principal processo de síntese industrial do benzaldeído e algumas reações envolvendo essa substância, além das suas aplicações e toxicidade.

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Section: Aplicações Industriaisunclassified

Benzaldehyde (CAS 100-52-7)

Leite¹

2020

Rev. Virtual Quim.

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“…In continuation of our previous studies on the synthesis of benzimidazole‐ and theophylline‐based analogues and multicomponent reactions herein we report an efficient protocol for the synthesis of some novel pyrimidine‐fused heterocycles (PFH) incorporating imidazole, benzimidazole, and theophylline backbones using a multicomponent reaction as final step.…”

Section: Introductionmentioning

confidence: 97%

Synthesis of Imidazole and Theophylline Derivatives Incorporating Pyrimidine‐Fused Heterocycles Using Magnetic Nanoparticles‐Supported Tungstic Acid (MNP‐TA) Catalyst

Divar

Panahi

Shariatipour

et al. 2016

Journal of Heterocyclic Chem

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In the current study, divers pyrimidine‐fused heterocycles containing an imidazole, benzimidazole, or theophylline moieties were synthesized. For the synthesis of this category of compounds, first, some new bromo‐substituted aldehydes (BSAs) were synthesized using reaction of 4‐hydroxybenzaldehyde and dibromides. Then, BSAs were reacted with imidazole, benzimidazole, and theophylline in order to synthesize corresponding heterocyclic‐substituted aldehydes (HSAs). Finally, the synthesized HSAs underwent in a multi‐components reaction with barbituric acids, amines, and dimedone in the presence of magnetic nanoparticles‐supported tungstic acid (MNP‐TA) catalyst in order to synthesis target products in good to excellent yields. The MNP‐TA was reusable using an external magnetic field and providing a clean and efficient reaction conditions for efficient synthesis of this class of compounds.

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“…Usually, homogeneous catalytic processes have effective active sites that show relatively high catalytic performance and selectivity [42] . However, most of the homogeneous catalytic processes meet some degree of difficulties, especially, in recycling, and stability.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Catalytic Application of MTsCOO‐Cu as a Melamine‐Based Metal‐Organic Framework in Facile Preparation of the 5‐Substituted‐1H‐Tetrazoles

2022

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A novel melamine‐based metal‐organic framework (MTsCOO‐Cu) has been designed, synthesized, and structurally characterized by FT‐IR, NMR, PXRD, FE‐SEM, EDX mapping, DTA, and TGA techniques. The MTsCOO‐Cu is successfully synthesized by the reaction of melamine with tosyl chloride and oxidation of methyl groups of the tosyl counterpart to carboxylic acids moieties and a consequent reaction with copper ion under ultrasonic irradiation. The synthesized MTsCOO‐Cu is catalytically used for the facile preparation of a series of 5‐substituted‐1H‐tetrazoles derivatives via click [3+2] cycloaddition reactions between various arrays of aromatic and aliphatic nitriles and sodium azide in PEG‐400 at 75 °C up to 86 %. The crucial reaction parameters including the type of solvent, temperature, and catalyst loading in progressing the reaction are evaluated and discussed. The synthesized MTsCOO‐Cu MOF showed an excellent catalytic activity, high chemical and thermal stabilities above 600 °C, simple preparation with readily available starting materials, and also ease of recyclability and reusability for four consecutive uses without considerable loss of activity. The output of this work may open new approaches for using new generations of MOFs catalysts in diverse chemical transformations.

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A green and efficient procedure for one-pot synthesis of xanthenes and acridines using silica boron–sulfuric acid nanoparticles (SBSANs) as a solid Lewis-protic acid

Cited by 18 publications

References 55 publications

Benzaldehyde (CAS 100-52-7)

Benzaldehyde (CAS 100-52-7)

Synthesis of Imidazole and Theophylline Derivatives Incorporating Pyrimidine‐Fused Heterocycles Using Magnetic Nanoparticles‐Supported Tungstic Acid (MNP‐TA) Catalyst

Synthesis and Catalytic Application of MTsCOO‐Cu as a Melamine‐Based Metal‐Organic Framework in Facile Preparation of the 5‐Substituted‐1H‐Tetrazoles

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