Buscar
Mostrando ítems 11-20 de 1634
Evaluation of crystallization kinetics of poly (ether-ketone-ketone) and poly (ether-ether-ketone) by DSC
(Departamento de Ciência e Tecnologia Aeroespacial, 2010)
The poly (aryl ether ketones) are used as matrices in advanced composites with high performance due to its high thermal stability, excellent environmental performance and superior mechanical properties. Most of the physical, ...
Synthesis of Benzo-Fused Heterocycles by Intramolecular alpha-Arylation of Ketone Enolate Anions
(American Chemical Society, 2012)
Indium-mediated regioselective synthesis of ketones from arylstannanes under solvent-free ultrasound irradiation
(Elsevier, 2013-05)
The solvent-free indium-promoted reaction of alkanoyl chlorides with sterically and electronically diverse arylstannanes is a simple and direct method for the regioselective synthesis of primary, secondary and tertiary ...
Effects of insecticidal ketones present in mint plants on GABA A receptor from mammalian neurons
(Pharmacognosy Network Worldwide, 2017-03)
The genus Mentha, an important member of the Lamiaceae family, is represented by many species commonly known as mint. The insecticidal activity of Mentha oil and its main components has been tested and established against ...
Terpene ketones as natural insecticides against Sitophilus zeamais
(Elsevier Science, 2015-08)
The eleven terpene ketones, thymoquinone, (R)-carvone, (S)-carvone, pulegone, dihydrocarvone, menthone, verbenone, ocimenone, camphor, α-thujone and piperitenone, were tested as contact and fumigant insecticides against ...
An insecticide formulation of terpene ketones against Sitophilus zeamais and its incorporation into low density polyethylene films
(Elsevier, 2017-08)
The use of active natural compounds derived from plants appears as an interesting alternative for pest control in stored products. In this study, the fumigant toxicity of several terpene ketones against maize weevil ...
Evaluation of Decomposition Kinetics of Poly (Ether-Ether-Ketone) by Thermogravimetric Analysis
(Univ Fed Sao Carlos, Dept Engenharia Materials, 2014-01-01)
The non-isothermal thermogravimetric methods have been used extensively for the determination of kinetic parameters in polymers. The poly (ether ketones) are used as matrix in advanced high performance composites due its ...
An expedient route to heterocycles througha-arylation of ketones and arylamides bymicrowave induced thermal SRN1 reactions
(Royal Society of Chemistry, 2014-03)
Microwave irradiation promotes a quick aromatic nucleophilic substitution by a thermally induced electrontransfer process to form new C–C bonds by the coupling of aryl radicals and enolate nucleophiles. Diverse2-aryl-1-p ...
Metal carbene N-H insertion of chiral alpha,alpha '-dialkyl alpha-diazoketones. A novel and concise method for the stereocontrolled synthesis of fully substituted azetidines
(Pergamon-elsevier Science LtdOxfordInglaterra, 2004)