Results 11 to 20 of about 6,753 (159)

Ligand Assisted CO2 Activation and Catalytic Valorization by an NHI‐Stabilized Stannylene

ChemCatChem, Volume 14, Issue 19, October 10, 2022., 2022
A heteroleptic N‐heterocyclic imine (NHI)‐supported (aryl)stannylene enables activation and valorization of CO2 to C1 feedstock in stoichiometric and catalytic manner via ligand assisted hydroboration. Abstract The aryl(imino)stannylene MesTer[N(IDipp)]Sn could be obtained by treating NHILi (NHI=N(IDipp), IDipp=C[N‐(2,6‐iPr2C6H3)CH]2) with MesTerSnCl ...
Debotra Sarkar, Lisa Groll, Dominik Munz, Franziska Hanusch, Shigeyoshi Inoue   +4 more
wiley   +1 more source

Cyclopentadienylidene‐ and Fluoren‐9‐ylidene‐methane‐1,1‐dithiolato Metalates of Tin, Indium and Bismuth

European Journal of Inorganic Chemistry, Volume 2021, Issue 37, Page 3852-3860, October 7, 2021., 2021
Coordination and structural chemistry of fulvene‐1,1‐dithiolate [CpCS2]2− and its fluorene analogue [FluoCS2]2− with main group metals was essentially unexplored. This gave impetus to fill the gap and to accept surprises. Abstract Quaternary ammonium and phosphonium stannates(II), indates(III) and bismuthates(III) displaying dianionic S,S dithiolate ...
Tobias Vollgraff, Nick Michel, Jörg Sundermeyer   +2 more
wiley   +1 more source

Formation of Aromatic O‐Silylcarbamates from Aminosilanes and Their Subsequent Thermal Decomposition with Formation of Isocyanates

European Journal of Inorganic Chemistry, Volume 2021, Issue 23, Page 2211-2224, June 21, 2021., 2021
A novel phosgene‐free approach towards isocyanates using aminosilanes and carbon dioxide is reported. The four‐step overall synthesis of isocyanates includes a pressure supported CO2 insertion into the Si−N bonds to form O‐silylcarbamates and their transformation into isocyanates by thermal treatment.
Franziska Gründler, Henrik Scholz, Marcus Herbig, Sandra Schwarzer, Jörg Wagler, Edwin Kroke   +5 more
wiley   +1 more source

Cornforth–Evans Transition States in Stereocontrolled Allylborations of Epoxy Aldehydes

Chemistry – A European Journal, Volume 26, Issue 39, Page 8639-8650, July 14, 2020., 2020
Felkin–Anh or Cornforth–Evans? The allylboration of epoxy aldehydes provides a stereoselective access to contiguously functionalized alkyl chains as found in a myriad of natural products. Studying this transformation in experiment and in silico disclosed high stereoselectivities, the mode of asymmetric induction, and enabled the predictable application
Robert R. A. Freund, Matthias van den Borg, Daniel Gaissmaier, Robin Schlosser, Timo Jacob, Hans‐Dieter Arndt   +5 more
wiley   +1 more source

Efectividad biológica de organofosforados y carbamatos en el control de nematodos en banano

Revista Biológico Agropecuaria Tuxpan, 2016
En México el banano es el segundo frutal de mayor importancia económica, con una producción de 2.2 millones de toneladas anuales; los nematodos son las plagas más importantes del banano afectando el crecimiento y desarrollo debido al daño ocasionado en ...
C.A García Munguía, A. M García Munguía, M. Acosta Ramos, M. Pérez Sato, E. Vázquez Sánchez, A. García Munguía, H. González De Jesús, M. Franco Sánchez   +7 more
doaj   +1 more source

Tandem Reactivity of Metal−Carbon and Carbon−Silicon Bonds in Mononuclear α‐Silyl Organolithium or Organosodium Complexes Towards CO, CO2 and Heteroallenes

Angewandte Chemie, EarlyView.
Anionic α‐silyl alkyl is one of the most used organometallic building blocks and funtional groups. Traditionally, the C─Si bond in these complexes is considered as inert. In this work, we report a series of reactions between mononuclear organo‐lithium and ‐sodium complexes with CO, CO2, or heteroallenes.
Xiao Yang, Jack M. Hemingway, Wataru Kanna, Nathan Davison, Hiroki Hayashi, Louise Male, Paul G. Waddell, James A. Dawson, Erli Lu   +8 more
wiley   +2 more sources

Intoxicação em cães e gatos: diagnóstico toxicológico empregando cromatografia em camada delgada e cromatografia líquida de alta pressão com detecção ultravioleta em amostras estomacais Intoxication in dogs and cats: toxicological diagnosis using thin layer chromatography and high pressure liquid chromatography with ultraviolet detection in stomach samples

Ciência Rural, 2010
Agrotóxicos e raticidas são responsáveis por inúmeras intoxicações humanas e animais. Dados preliminares sugerem que o uso ilegal desses compostos com a finalidade de intoxicação fatal em pequenos animais é uma prática comum na região central do Estado ...
Rachel Picada Bulcão, Raquel Tonello, Sílvia Juliane Piva, Gabriela Cristina Schmitt, Tatiana Emanuelli, Eliane Dallegrave, Solange Cristina Garcia   +6 more
doaj   +1 more source

Factores de exposición a plaguicidas organofosforados y carbamatos en el departamento del Putumayo, 2006

Biomédica: revista del Instituto Nacional de Salud, 2007
Introducción. En 2005 el Sistema de Vigilancia en Salud Pública encontró que el departamento del Putumayo es la región con mayor incidencia de intoxicaciones por plaguicidas en Colombia. Objetivo. Establecer la exposición a plaguicidas organofosforados y
Marcela Varona, Gloria Henao, Angélica Lancheros, Álix Murcia, Sonia Díaz, Rocío Morato, Ligia Morales, Dyva Revelo, Patricia de Segurado   +8 more
doaj   +1 more source

Uso de pralidoxima en la intoxicación con metomilo en pastor collie en Medellín (Colombia). Reporte de caso

Revista de la Facultad de Medicina Veterinaria y de Zootecnia, 2019
Se describe el uso de la pralidoxima en el tratamiento de una intoxicación con metomilo en un canino en la ciudad de Medellín (Colombia). Un macho de raza pastor collie sufrió intoxicación accidental con metomilo, presentó cuadro colinérgico, con miosis,
J. Castañeda-Duque, V. M. Molina
doaj   +1 more source

Uso de plaguicidas inhibidores de acetilcolinesterasa en once entidades territoriales de salud en Colombia, 2002-2005

Biomédica: revista del Instituto Nacional de Salud, 2010
Introducción. Por ser los plaguicidas anticolinesterásicos una causa importante de intoxicación y de muerte por intoxicación en los países en vía de desarrollo, el Instituto Nacional de Salud implementó el Programa de Vigilancia Epidemiológica de ...
Omayda Cárdenas, Elizabeth Silva, Jaime Eduardo Ortiz   +2 more
doaj   +1 more source