Search results for "ylid"
showing 10 items of 1155 documents
CCDC 248542: Experimental Crystal Structure Determination
2004
Related Article: C.Boskovic, A.Sieber, G.Chaboussant, H.U.Gudel, J.Ensling, W.Wernsdorfer, A.Neels, G.Labat, H.Stoeckli-Evans, S.Janssen|2004|Inorg.Chem.|43|5053|doi:10.1021/ic049600f
CCDC 1948965: Experimental Crystal Structure Determination
2019
Related Article: Guang Zhang, Felix Hermerschmidt, Anup Pramanik, Dieter Schollmeyer, Martin Baumgarten, Pranab Sarkar, Emil J. W. List-Kratochvil, Klaus Müllen|2019|J.Mater.Chem.C|7|15252|doi:10.1039/C9TC04748D
CCDC 984545: Experimental Crystal Structure Determination
2014
Related Article: Samia Benmansour, Eugenio Coronado, Carlos Giménez-Saiz, Carlos J. Gómez-García, Carola Rößer|2014|Eur.J.Inorg.Chem.||3949|doi:10.1002/ejic.201402023
CCDC 1579780: Experimental Crystal Structure Determination
2018
Related Article: Lorena Martínez, Livia Arizaga, Donatella Armentano, Francesc Lloret, Ricardo González, Carlos Kremer, Raúl Chiozzone|2018|J.Coord.Chem.|71|748|doi:10.1080/00958972.2018.1441405
CCDC 1048422: Experimental Crystal Structure Determination
2015
Related Article: Suraj Mondal, Shuvankar Mandal, Luca Carrella, Arpita Jana, Michel Fleck, Andreas Köhn, Eva Rentschler, and Sasankasekhar Mohanta|2015|Inorg.Chem.|54|117|doi:10.1021/ic501900d
CCDC 1828644: Experimental Crystal Structure Determination
2018
Related Article: Joaquín Viqueira, María L. Durán, José A. García-Vázquez, Jesús Castro, Carlos Platas-Iglesias, David Esteban-Gómez, Gloria Alzuet-Piña, Angeles Moldes, Otaciro R. Nascimento|2018|New J.Chem.|42|15170|doi:10.1039/C8NJ03292K
A mechanistic study of the participation of azomethine ylides and carbonyl ylides in [3+2] cycloaddition reactions
2015
The participation of azomethine ylides (AYs) and carbonyl ylides (CYs) in [3+2] cycloaddition (32CA) reactions has been analysed at the DFT B3LYP/6-31G(d) level. The asymmetric substitution breaks the pseudodiradical character of the simplest three-atom-components (TACs), modifying their electrophilic and nucleophilic behaviours. These TACs react quickly towards electrophilic nitroethylene. However, while the reaction with AY takes place via a zw-type mechanism, the reaction with CY appears to take place via a pr-type mechanism. A different behaviour is found in the reactivity towards the nucleophilic methyl vinyl ether. While AY presents a high activation energy, CY presents a high reactiv…
Straightforward Regio- and Diastereoselective Synthesis, Molecular Structure, Intermolecular Interactions and Mechanistic Study of Spirooxindole-Engr…
2021
Straightforward regio- and diastereoselective synthesis of bi-spirooxindole-engrafted rhodanine analogs 5a–d were achieved by one-pot multicomponent [3 + 2] cycloaddition (32CA) reaction of stabilized azomethine ylide (AYs 3a–d) generated in situ by condensation of L-thioproline and 6-chloro-isatin with (E)-2-(5-(4-chlorobenzylidene)-2,4-dioxothiazolidin-3-yl)-N-(2-morpholinoethyl)acetamide. The bi-spirooxindole-engrafted rhodanine analogs were constructed with excellent diastereo- and regioselectivity along with high chemical yield. X-ray crystallographic investigations for hybrid 5a revealed the presence of four contiguous stereocenters related to C11, C12, C19 and C22 of the spiro struct…
Synthesis and Reactivity toward Isonitriles of (2-Aminoaryl)palladium(II) Complexes
2001
Mixtures of “Pd(dba)2” (dba = dibenzylideneacetone) and 2,2‘-bipyridine (bpy; 1:2) or N,N,N‘,N‘-tetramethylethylenediamine (tmeda; 1:1) react with 2-bromo-4-nitroaniline to give [Pd{C6H3NH2-2-NO2-5}Br(N−N)] (N−N = bpy (1b), tmeda (1b‘)). Reactions of 2-iodoaniline with mixtures of “Pd(dba)2” and isonitriles RNC (R = C6H3Me2-2,6 (Xy), 2:1:2 molar ratios; R = tBu, 2.9:1:2 molar ratios) result in the formation of the complexes [Pd{κ2C,N-C(NXy)C6H4NH2-2}I(CNXy)] (2a) and trans-[Pd{C(NtBu)C6H4NH2-2}I(CNtBu)2] (3a*). The reactions of [Pd{C6H4NH2-2}I(bpy)] and 1b‘ with RNC give the complexes trans-[Pd{C(NR)C6H3NH2-2-Y-5}}X(CNR)2] (Y = H, X = I, R = Xy (3a), tBu (3a*); Y = NO2, X = Br, R = Xy (3b),…
Diorganotin(IV) Complexes of Methyl 2-{[(E)-8-Oxo-5, 8-dihydroquinolin-5-ylidene]hydrazino}benzoate
2012
Three cis-bis{5-[(E)-2-(2-carbomethoxyphenyl)-1- diazenyl]quinolinolato}-diorganotin(IV), R2Sn(L)2, complexes [R = Me (1), Ph (2) and Bz (3)] were synthesized and characterized by 1H-, 13C-, 119Sn- NMR, IR, and 119Sn Mössbauer spectroscopic techniques in combination with elemental analysis. The structure of diphenyltin(IV) complex Ph2Sn(L)2 (2) was determined by single-crystal X-ray crystallography as its tri-benzene solvate. Each complex was found to adopt a distorted cis-R2 octahedral arrangement around the tin atom with the quinolinolato ligands being N,O-chelating; the oxygen atoms are trans to each other. The complexes retain their solid- state structure in non-coordinating solvents as…