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Síntese de quitosana ftalato e sua caracterização
(Universidade Tecnológica Federal do ParanáToledoBrasilTecnologia em Processos QuímicosUTFPR, 2014-11-27)
Chitin and chitosan are examples of natural polymers and recent exploration. Chitin forms the basis of the exoskeleton of crustaceans aquatics and insects, besides occurring in the cell walls of fungi and yeasts. While ...
Síntese do primeiro cristal líquido iônico derivado da tristriazolotriazina
(Universidade Tecnológica Federal do ParanáCuritibaBrasilBacharelado em QuímicaUTFPR, 2017-09-15)
This work describes the synthesis, characterization and the studies of the thermal and organizational properties of a new ionic liquid-crystalline material derived from tristriazolotriazine (TTT). Initially, the TTT was ...
Recent applications of heteropolyacids and related compounds in heterocycles synthesis
(Bentham Science Publishers, 2009-11)
Heteropolyacids (HPAs) and related compounds have received considerable attention as solid acids in recent years. HPAs possess unique physicochemical properties, with their structural mobility and multifunctionality being ...
Acylsilanes and their applications in organic chemistry
(Sociedade Brasileira de Química, 2001)
Remarkable reactivity of boron-substituted furans in the Diels-Alder reactions with maleic anhydride
(American Chemical Society, 2019-06-19)
The reactivity of boron-substituted furans as dienes in the Diels-Alder reaction with maleic anhydride has been investigated. Gratifyingly, the furans with boryl substituents at C-3 gave the exo cycloadduct exclusively ...
Síntese e caracterização de cristais líquidos discóticos derivados da quercetina
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em QuímicaUTFPR, 2018-07-31)
There is a growing demand for new, intelligent materials that have the least impact on the environment. Discotic liquid crystals are therefore well studied due to their capacity of self-organization, presenting greater ...
Acid-activated Carbons from Peanut Shells: Synthesis, Characterization and Uptake of Organic Compounds from Aqueous Solutions
(Multi-Science Publishing, 2003-07)
Activated carbon with a high adsorption capacity for the removal of organic compounds from aqueous solutions was made from phosphoric acid-activated peanut shells. Adsorption isotherms for the uptake of phenol, iodine, ...
The Growing Impact of Niobium in Organic Synthesis and Catalysis
(Aldrich Chemical Co Inc, 2014)
Ultrasound-promoted metal-catalyzed synthesis of heterocyclic compounds of medicinal interest
(Elsevier, 2021)
In the last decade, sonochemistry has become an interesting field of research in both organic chemistry and pharmaceutical industry. It is well known that sonochemical effects are derived from a phenomenon known as acoustic ...