Results 41 to 50 of about 31,423,583 (299)
The ortho effect in directed C–H activation
Chemical Science, 2021 The term and concept of Ortho Effect (OE) is introduced for the description of steric effects in transition metal catalyzed directed ortho C–H activation reactions to explain and predict reactivities of substrates.
Tóth, Balázs L +7 more
openaire +5 more sources
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 +5 more
core +1 more source
Computational exploration of the reaction mechanism of the Cu+-catalysed synthesis of indoles from N-aryl enaminones [PDF]
Royal Society Open Science, 2016 We have studied the role of Cu+-phenantroline as a catalyst in the cyclization of N-aryl-enaminones using density-functional theory computations. The catalyst was found to bind the substrate upon deprotonation of its eneaminone, and to dramatically ...
Carlos E. P. Bernardo, Pedro J. Silva
doaj +1 more source
meta- and para-Selective C–H Functionalization by C–H Activation
, 2015 Transition metal-catalyzed C–H bond functionalization has recently emerged as an indispensable tool for transforming otherwise unreactive C–H bonds. In addition to various strategies for ortho-selective functionalization via chelation assistance, organometallic C–H activation has recently enabled novel functionalizations of (hetero)arenes at remote ...
Li, Jie +2 more
openaire +2 more sources
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. +11 more
core +1 more source
, 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 +5 more
core +1 more source
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 +10 more
wiley +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 +7 more
doaj +1 more source
3d Transition Metals for C–H Activation
Chemical Reviews, 2018 C-H activation has surfaced as an increasingly powerful tool for molecular sciences, with notable applications to material sciences, crop protection, drug discovery, and pharmaceutical industries, among others. Despite major advances, the vast majority of these C-H functionalizations required precious 4d or 5d transition metal catalysts. Given the cost-
Gandeepan P. +5 more
openaire +4 more sources
Ruthenium-Mediated Distal C-H Activation
, 2018 Addressing remote C-H functionalization is a prominent challenge in the field of homogeneous catalysis. The past two decades have accounted for major developments in this domain, proclaiming efficient selectivity at the meta and para positions ...
MAITI, D +3 more
core +1 more source