Results 31 to 40 of about 31,239,114 (260)

Rh(III)-catalyzed directed C–H bond amidation of ferrocenes with isocyanates

Beilstein Journal of Organic Chemistry, 2012
[RhCp*(OAc)2(H2O)] [Cp* = pentamethylcyclopentadienyl] catalyzed the C–H bond amidation of ferrocenes possessing directing groups with isocyanates in the presence of 2 equiv/Rh of HBF4·OEt2.
Satoshi Takebayashi, Tsubasa Shizuno, Takashi Otani, Takanori Shibata   +3 more
doaj   +1 more source

Divergent isoindolinone synthesis through palladium-catalyzed isocyanide bridging C–H activation

Cell Reports Physical Science, 2022
Summary: The formation of thermodynamically accessible metallacycle is crucial to achieve site-selective C–H bond activation. Here, we report an isocyanide-bridging C–H activation through the formation of a five-membered palladacycle. As such, a proximal
Fulin Zhang, Ruihua Zhao, Lei Zhu, Yinghua Yu, Saihu Liao, Zhi-Xiang Wang, Xueliang Huang   +6 more
doaj   +1 more source

Late-stage peptide C–H alkylation for bioorthogonal C–H activation featuring solid phase peptide synthesis

Nature Communications, 2019
Palladium-catalyzed late-stage diversification of structurally complex peptides has major shortcomings. Here, the authors developed a ruthenium-catalyzed C–H alkylations of peptides allowing for fluorescence labeling, late-stage diversifications and ...
Alexandra Schischko, Nikolaos Kaplaneris, Torben Rogge, Giedre Sirvinskaite, Jongwoo Son, Lutz Ackermann   +5 more
doaj   +1 more source

On the Use of Iron in Organic Chemistry

Molecules, 2020
Transition metal catalysis in modern organic synthesis has largely focused on noble transition metals like palladium, platinum and ruthenium. The toxicity and low abundance of these metals, however, has led to a rising focus on the development of the ...
Arnar Guðmundsson, Jan-E. Bäckvall
doaj   +1 more source

Sulfoximines-Assisted Rh(III)-Catalyzed C–H Activation and Intramolecular Annulation for the Synthesis of Fused Isochromeno-1,2-Benzothiazines Scaffolds under Room Temperature

Molecules, 2020
A mild and facile Cp*Rh(III)-catalyzed C–H activation and intramolecular cascade annulation protocol has been proposed for the furnishing of highly fused isochromeno-1,2-benzothiazines scaffolds using S-phenylsulfoximides and 4-diazoisochroman-3-imine as
Bao Wang, Xu Han, Jian Li, Chunpu Li, Hong Liu   +4 more
doaj   +1 more source

Chemodivergent manganese-catalyzed C–H activation: modular synthesis of fluorogenic probes

Nature Communications, 2021
Bioorthogonal diversification of peptides is generally dependent on impractical prefunctionalization methods. Here, the authors develop a manganese(I)-catalyzed C–H fluorescent labeling with BODIPY probes, which enables the development of activatable ...
Nikolaos Kaplaneris, Jongwoo Son, Lorena Mendive-Tapia, Adelina Kopp, Nicole D. Barth, Isaac Maksso, Marc Vendrell, Lutz Ackermann   +7 more
doaj   +1 more source

Heterolytic bond activation at gold: Evidence for gold(III) H-B, H-Si complexes, H-H and H-C cleavage [PDF]

, 2019
The coordinatively unsaturated gold(III) chelate complex [(C^N-CH)Au(C6F5)]+ (1+) reacts with main group hydrides H-BPin and H-SiEt3 in dichloromethane solution at 70 °C to form the corresponding σ-complexes, which were spectroscopically characterized (C^
Budzelaar, Peter, Bochmann, Manfred, Bochmann M., Rocchigiani L., Budzelaar P. H. M., Rocchigiani, Luca   +5 more
core   +1 more source

Manganese(I)‐Catalyzed Dispersion‐Enabled C−H/C−C Activation

, 2017
C-H/C-C Functionalizations were achieved with the aid of a versatile manganese(I) catalyst. Thus, an organometallic manganese-catalyzed C-H activation set the stage for silver-free C-H/C-C transformations with ample substrate scope and excellent levels ...
Mata, Ricardo A., Weiping Liu, Ricardo A. Mata, Wuttke, Axel, Liu, Weiping, Ackermann, Lutz, Tjark H. Meyer, Meyer, Tjark H., Feldt, Milica, Milica Feldt, Axel Wuttke, Lutz Ackermann   +11 more
core   +1 more source

Cobalta‐Electrocatalyzed C−H Activation in Biomass‐Derived Glycerol: Powered by Renewable Wind and Solar Energy

, 2020
Aqueous glycerol was identified as a renewable reaction medium for metalla‐electrocatalyzed C−H activation powered by sustainable energy sources. The renewable solvent was employed for cobalt‐catalyzed C−H/N−H functionalizations under mild conditions ...
Gleb A. Chesnokov, Chesnokov, Gleb A., Ackermann, Lutz, Tjark H. Meyer, Meyer, Tjark H., Lutz Ackermann   +5 more
core   +1 more source

Retrospective Analysis of Donor Lymphocyte Infusions in Pediatric Patients With Mixed Chimerism After Hematopoietic Stem Cell Transplantation

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Allogeneic hematopoietic stem cell transplantation (alloHSCT) is an essential therapy for several malignant and nonmalignant diseases, but relapse and graft loss remain the principal threats to its success. Routine monitoring of chimerism and minimal residual disease (MRD) enables early detection of imminent recurrence and guides ...
Carmen Junk, Sebastian Michaelis, Michaela Döring, Thomas Eichholz, Ursula Holzer, Martin Ebinger, Tim Flaadt, Rupert Handgretinger, Peter Lang, Jan Frederic Weller, Markus Mezger   +10 more
wiley   +1 more source