Results 171 to 180 of about 105,820 (326)

Small molecule elimination from Group IVB (titanium, zirconium, hafnium) amido complexes [PDF]

, 1993
Thomas R. Cundari, Mark S. Gordon
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A C3‐Symmetric Diphenylethylendiamine‐Based Catalyst in the Asymmetric Michael Addition of α,β‐Unsaturated Ketones with 4‐Hydroxycoumarin and 4‐Hydroxyquinolin‐2‐One

European Journal of Organic Chemistry, Volume 28, Issue 33, September 20, 2025.
Two C3‐symmetric organocatalysts with multiple amino groups are prepared and employed in the asymmetric addition of 4‐hydroxycoumarin and quinoline‐2‐one to unsaturated ketones. The all‐amino version of the catalyst induces the better stereoselectivity and provides the products in up to 95% yield.
Shilashi Badasa Oljira, Martina De Angelis, Simone Manetto, Francesco Fiorentino, Dante Rotili, Luciana Mosca, Daniel Di Risola, Roberto Mattioli, Marco Pierini, Giulia Mazzoccanti, Alessia Ciogli   +10 more
wiley   +1 more source

Aproveitamento do amido de alimentos estudados em humanos e animais [PDF]

, 1993
Elizabete Wenzel de Menezes
openalex   +1 more source

Aspartimide Formation and Its Prevention in Fmoc Chemistry Solid Phase Peptide Synthesis

ChemBioChem, Volume 26, Issue 18, September 18, 2025.
Aspartimide formation remains a persistent challenge in Fmoc solid phase peptide synthesis. This review surveys strategies to prevent aspartimide formation, covering protecting group design, backbone protection, and alternative deprotection approaches.
Marco J. W. Kong, Tim J. H. P. van den Braak, Kevin Neumann   +2 more
wiley   +1 more source

Inhibition of Amido Phosphoribosyltransferase by Antifolates in Mouse L1210 Leukaemia Cells [PDF]

, 1991
Melissa E. Sant, S.D. Lyons, Leonidas Phillips, Eve Szabados, R. I. Christopherson   +4 more
openalex   +1 more source

Small Molecule Activation by Metallylenes and their Follow‐Up Reactions

ChemistryEurope, Volume 3, Issue 5, September 18, 2025.
Metallylenes offer a promising, tunable platform for small molecule activation, combining transition metal‐like reactivity with earth abundance. Ligand modifications and computational insights have unlocked new catalytic pathways, expanding their potential in sustainable synthesis.
Eveline H. Tiekink, Matthijs W. Kragtwijk, Trevor A. Hamlin   +2 more
wiley   +1 more source

Magneto‐Optical Correlations in a High Symmetry Dysprosium Complex Reveal an Almost “Ideal Non‐SMM” and Orange‐to‐Red DyIII‐Based Emitter

ChemistryEurope, Volume 3, Issue 5, September 18, 2025.
Dysprosium in high‐symmetry environment: an original crystal‐field energetic profile provides an experimental demonstration of the oblate/prolate theory and is also responsible for an unprecedented orange‐to‐red emission. The importance of investigating high‐symmetry systems in order to reveal properties that would otherwise be concealed in less ...
Nimisha Jain, Gregoire David, Marie Cordier, Yan Suffren, Boris Le Guennic, Yann Sarazin, Kevin Bernot   +6 more
wiley   +1 more source

Efeitos de fontes nitrogenadas com distintas degradabilidades sobre o aproveitamento da fibra, do nitrogênio e do amido em rações para bovinos

Revista Brasileira de Zootecnia, 2002
O objetivo do experimento foi avaliar os efeitos da utilização do farelo de soja ou da glutenose sobre a degradabilidade ruminal in situ dos constituintes de dietas compostas por feno, milho e as fontes nitrogenadas fornecidas para bovinos adultos com ...
Míriam Silvânia de Souza, Jane Maria Bertocco Ezequiel, Paulo Rossi Júnior, Euclides Braga Malheiros   +3 more
doaj  

Fracionamento dos carboidratos de silagens de milho safrinha colhidas em diferentes alturas de corte Carbohydrates fractioning of late crop corn silages harvested at different cutting height

Ciência Rural, 2009
Este trabalho teve como objetivo verificar se há alteração na composição dos carboidratos de silagens de milho safrinha quando colhidas nas alturas de corte (AC) de 20, 45, 70 e 95cm acima do solo.
Luís Felipe Brancher Pedó, José Laerte Nörnberg, João Pedro Velho, Fernanda Hentz, João Dionísio Henn, Júlio Otávio Jardim Barcellos, Ione Maria Pereira Haygert Velho, Fábio Ritter Marx   +7 more
doaj  

Darstellung, ¹¹B-NMR- und Schwingungsspektren von μ-Amido-bis(hexahydro-closo-hexaborat)(1-), und Kristallstruktur von [As(C₆H₅)₄][B₆H₆(NH₂)B₆H₆] / Preparation, ¹¹B NMR and Vibrational Spectra of μ-Amido-bis(hexahydro-closo-hexaborate)(1-) and Crystal Structure of [As(C₆H₅)₄][B₆H₆(NH₂)B₆H₆] [PDF]

, 1995
A. Franken, W. Preetz
openalex   +1 more source