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Uso de K-10 e irradiação de microondas no estudo da metodologia de transesterificação e na síntese de β-enamino ésteres
(Universidade Federal de Santa MariaBRQuímicaUFSMPrograma de Pós-Graduação em Química, 2005-05-20)
Due to the high chemical versatility of β-keto esters and the β-enamino carbonylic compounds as synthetic precursors, our research group has investigated and developed methodologies for their synthesis and reactivity. In ...
Deposition Form and Bioaccessibility of Keto-carotenoids from Mamey Sapote (Pouteria sapota), Red Bell Pepper (Capsicum annuum), and Sockeye Salmon (Oncorhynchus nerka) Filet
(2016-02-18)
The ultrastructure and carotenoid-bearing structures of mamey sapote (Pouteria sapota) chromoplasts were
elucidated using light and transmission electron microscopy and compared to carotenoid deposition forms in red bell ...
Deposition Form and Bioaccessibility of Keto-carotenoids from Mamey Sapote (Pouteria sapota), Red Bell Pepper (Capsicum annuum), and Sockeye Salmon (Oncorhynchus nerka) Filet
(2016-02-18)
The ultrastructure and carotenoid-bearing structures of mamey sapote (Pouteria sapota) chromoplasts were
elucidated using light and transmission electron microscopy and compared to carotenoid deposition forms in red bell ...
Chemo- and stereoselective reduction of β-keto esters by spores and various morphological forms of Mucor rouxii
(Elsevier Science Inc, 2002-05)
We report the efficient enantioselective reduction of a number of β-ketoesters by mycelial and yeast-like forms of the dimorphic fungus Mucor rouxii in a whole-cell process. Mycelial cells, grown in aerobiosis, were efficient ...
Sínteses quimioenzimáticas de moléculas bioativas: uma abordagem à química verde
(Universidade Estadual Paulista (Unesp), 2017-09-04)
O emprego da Biocatálise utilizando enzimas isoladas ou células íntegras fornece alternativas eficientes e potencialmente quimio-, regio- e estereosseletivas para a transformação de uma ampla variedade de compostos orgânicos. ...
Access to enantiopure α-alkyl-β-hydroxy esters through dynamic kinetic resolutions employing purified/overexpressed alcohol dehydrogenases
(Wiley VCH Verlag, 2012-06)
α-Alkyl-β-hydroxy esters were obtained via dynamic kinetic resolution (DKR) employing purified or crude E. coli overexpressed alcohol dehydrogenases (ADHs). ADH-A from R. ruber, CPADH from C. parapsilosis and TesADH from ...
Biotransformações empregando Dioscorea Trifida l. (Inhambu) e Opuntia ficus-indica L. (Palma) em reduções enantiosseletivas de β-cetoésteres
(Instituto de QuímicaPrograma de pós-graduação em QuímicaUFBABrasil, 2018-10-16)
O presente trabalho descreve a obtenção de derivados de -hidróxi ésteres
quirais, obtidos pela combinação de síntese química e biotransformação. O estudo
foi motivado pela perspectiva de identificar ...
Niobium pentachloride promoted synthesis of tetrahydropiridines by multicomponent reaction
(2013)
One-pot multicomponent synthesis of tetrahydropyridine derivatives between aniline derivatives, benzaldehyde and two different β-keto ester (methyl and ethyl acetoacetate) using niobium pentachloride as catalyst under mild ...
Radical Fluoroalkylation Reactions
(American Chemical Society, 2018-08)
Recent protocols and reactions for catalytic radical perfluoroalkylations will be described. The production of perfluoroalkyl radicals (RF = CnF2n+1, n ≥ 2), which effect both addition and substitution reactions on organic ...