Results 11 to 20 of about 101,444 (317)

Formation of New Alkynyl(phenyl)iodonium Salts and Their Use in the Synthesis of Phenylsulfonyl Indenes and Acetylenes

Molecules, 2005
The preparation of phenylsulfonyl indene derivatives and phenylsulfonyl- acetylenes from readily available alkynyl(phenyl)iodonium tetrafluoroborates and triflates was investigated using phenylsulfinate as nucleophile.
A. Varvoglis, A. Savva, C. Kyzas, A. Koumbis   +3 more
doaj   +1 more source

Unexpected = 4 + 2 Cycloaddition through Chromium Non-Heteroatom-Stabilized Alkynyl Carbene Complexes: Regioselective Access to Substituted 6-Azaindoles [PDF]

, 2018
This research was supported by the Spanish Government MINECO/FEDER (CTQ-2016-76840-R and CTQ-2017-87372-P (AEI/FEDER, UE)) and the Principality of Asturias, Spain (GRUPIN14 ...
Funes Ardoiz, Ignacio, Gómez Hernández, María Aránzazu, Sampedro, Diego, Santamaría Victorero, Javier   +3 more
core   +2 more sources

New Insight into the Reactivity of S,S-Bis-ylide

Molecules, 2023
The present work focuses on the reactivity of S,S-bis-ylide 2, which presents a strong nucleophilic character, as evidenced by reactions with methyl iodide and CO2, affording C-methylated salts 3 and betaine 4, respectively. The derivatization of betaine
Ugo Authesserre, V. S. V. S. N. Swamy, Nathalie Saffon-Merceron, Antoine Baceiredo, Tsuyoshi Kato, Eddy Maerten   +5 more
doaj   +1 more source

Blue Phosphorescence and Hyperluminescence Generated from Imidazo[4,5‐b]pyridin‐2‐ylidene‐Based Iridium(III) Phosphors

Advanced Science, 2022
Four isomeric, homoleptic iridium(III) metal complexes bearing 5‐(trifluoromethyl)imidazo[4,5‐b]pyridin‐2‐ylidene and 6‐(trifluoromethyl)imidazo[4,5‐b]pyridin‐2‐ylidene‐based cyclometalating chelates are successfully synthesized.
Xilin Yang, Xiuwen Zhou, Ye‐Xin Zhang, Deli Li, Chensen Li, Caifa You, Tai‐Che Chou, Shi‐Jian Su, Pi‐Tai Chou, Yun Chi   +9 more
doaj   +1 more source

Transformations of Group 7 Carbonyl Complexes: Possible Intermediates in a Homogeneous Syngas Conversion Scheme [PDF]

, 2009
A variety of C−H and C−C bond forming reactions of group 7 carbonyl complexes have been studied as potential steps in a homogeneously catalyzed conversion of syngas to C_(2+) compounds.
Bercaw, John E., Elowe, Paul R., Labinger, Jay A., West, Nathan M.   +3 more
core   +2 more sources

Synthesis of macrocyclization cyclophanes and their metal complexes, characterization and antimicrobial activity

Journal of Sustainable Construction Materials and Technologies, 2023
Siklofan tipi bileşikler, kimyasal özelliklerinden dolayı ilginç bir organik kimya sınıfı oluşturmaktadır. Tüm siklik bileşiklerin yapısında yüksek verimli sentez için makrosiklizasyon en kritik konudur.
Murat Ates, Murat Dönmez, Murat Turkyilmaz   +2 more
doaj   +1 more source

Photochemistry of Furyl- and Thienyldiazomethanes: Spectroscopic Characterization of Triplet 3-Thienylcarbene [PDF]

, 2012
Photolysis (λ \u3e 543 nm) of 3-thienyldiazomethane (1), matrix isolated in Ar or N2 at 10 K, yields triplet 3-thienylcarbene (13) and α-thial-methylenecyclopropene (9). Carbene 13 was characterized by IR, UV/vis, and EPR spectroscopy. The conformational
Albers R., Albers R., Aycard J.-P., Baird M. S., Birney D. M., Bolman P. S. H., Brian Bennett, Bucher G., Caroline R. Pharr, Dunning T. H., Dunning T. H., Fontecave M., Grote D., Herges R., Hoffman R. V., Hoffman R. V., Hutton R. S., Hutton R. S., Kaiser R. I., Katritzky A. R., Khasanova T., Khasanova T., Khasanova T., Kirmse W., Laura A. Kopff, LeBlanc B. F., LeBlanc B. F., Matzinger S., McClintock S. P., McKee M. L., McMahon R. J., McMahon R. J., McMahon R. J., Moss R. A., Moss R. A., Moss R. A., Nakatani K., Neese F., Nikitina A., Nikitina A. F., Osaka I., Pan W., Perepichka I. F., Perrotta R. R., Plattner D. A., Platz M. S., Purvis G. D., Robert J. McMahon, Roth H. D., Sander W., Sander W., Schreiner P. R., Scott A. Reid, Seburg R. A., Seburg R. A., Shirtcliff L. D., Sinnecker S., Sun J., Sun Y., Tomioka H., Wang J., Wang J., Wasserman E., Woodcock H. L., Woodcock H. L., Woon D. E., Young B. S., Zuev P. S.   +67 more
core   +3 more sources

Experimental and theoretical investigations on the high-electron donor character of pyrido-annelated N-heterocyclic carbenes

Beilstein Journal of Organic Chemistry, 2016
Rh(CO)2Cl(NHC) complexes of dipyrido-annelated N-heterocyclic carbenes were prepared. From the C–H coupling constant of the respective imidazolium salts and the N–C–N angle of the N-heterocyclic carbene (NHC), a weaker σ-donor character than that of ...
Michael Nonnenmacher, Dominik M. Buck, Doris Kunz   +2 more
doaj   +1 more source

Alkali-metal-mediated zincation (AMMZn) meets N-heterocyclic carbene (NHC) chemistry : Zn–H exchange reactions and structural authentication of a dinuclear Au(I) complex with a NHC anion [PDF]

, 2013
Merging two evolving areas in synthesis, namely cooperative bimetallics and N-heterocyclic carbenes (NHCs), this study reports the isolation of the first intermediates of alkali-metal-mediated zincation (AMMZn) of a free NHC and a Zn–NHC complex using ...
Aldeco-Perez, Andrikopoulos, Arduengo, III, Arduengo, III, Armstrong, Armstrong, Armstrong, Armstrong, Arnold, Arnold, Arnold, Back, Baillie, Bantu, Bourissou, Clegg, Clegg, Clegg, Conway, Crabtree, de Frémont, Diez-Gonzalez, Flower, Furuyama, Ghadwal, Gomez-Suarez, Guisado-Barrios, Haag, Hashmi, Hashmi, Hashmi, Hashmi, Hashmi, Hashmi, Jimenez-Nunez, Kobayashi, Kronig, Linton, Masuda, Mendoza-Espinosa, Mulvey, Mulvey, Mulvey, Mulvey, Musgrave, Nobuto, Raubnheimer, Rudolph, Rudolph, Schuster, Uchiyama, Wang, Wang, Wang, Wang, Westerhausen   +55 more
core   +1 more source

Macropolyhedral boron-containing cluster chemistry. Ligand-induced two-electron variations of intercluster bonding intimacy. Structures of nineteen-vertex[(eta(5)-C5Me5) HIrB18H19(PMe2Ph)] and the related carbene complex [(eta(5)-C5Me5)HIrB18H19{C(NHMe)(2)}] [PDF]

, 2004
Addition of PMe2Ph to fused-cluster syn-[(η5-C5Me5)IrB18H20] 1 to give [(η5-C5Me5)HIrB18H19(PMe2Ph)] 3 entails a diminution in the degree of intimacy of the intercluster fusion, rather than retention of inter-subcluster binding intimacy and a nido ...
Jelinek, T., Kennedy, J.D., Perera, S.D., Shea, S.L., Stibr, B., Thornton-Pett, M.   +5 more
core   +1 more source