Results 21 to 30 of about 562,929 (255)

A unified survey of Si-H and H-H bond activation catalysed by electron-deficient boranes [PDF]

open access: yes, 2015
The bond activation chemistry of B(C6F5)(3) and related electron-deficient boranes is currently experiencing a renaissance due to the fascinating development of frustrated Lewis pairs (FLPs).
Hermeke, Julia   +2 more
core   +1 more source

Regioselective Pd-catalyzed direct C1- and C2-arylations of lilolidine for the access to 5,6-dihydropyrrolo[3,2,1-ij]quinoline derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2019
The Pd-catalyzed C–H bond functionalization of lilolidine was investigated. The use of a palladium-diphosphine catalyst associated to acetate bases in DMA was found to promote the regioselective arylation at α-position of the nitrogen atom of lilolidine ...
Hai-Yun Huang   +4 more
doaj   +1 more source

Low-coordinate iridium NHC complexes derived from selective and reversible C–H bond activation of fluoroarenes [PDF]

open access: yes, 2015
Interaction of the reactive 14 VE {Ir(IBioxMe4)3}+ fragment with fluoroarenes results exclusively in ortho-C–H bond oxidative addition and formation of 16 VE Ir(III) derivatives [Ir(IBioxMe4)3(Ar)H]+ (Ar = 2-C6H4F, 2,3-C6H3F2, 2,4,6-C6H2F3). The C–H bond
Chaplin, Adrian B.   +2 more
core   +1 more source

Chelated Ruthenium Catalysts for Z-Selective Olefin Metathesis [PDF]

open access: yes, 2011
We report the development of ruthenium-based metathesis catalysts with chelating N-heterocyclic carbene (NHC) ligands that catalyze highly Z-selective olefin metathesis.
Endo, Koji, Grubbs, Robert H.
core   +3 more sources

Highly regioselective hydride transfer, oxidative dehydrogenation, and hydrogen-atom abstraction in the thermal gas-phase chemistry of [Zn(OH)](+)/C3H8 [PDF]

open access: yes, 2014
The thermal reactions of [Zn(OH)]+ with C3H8 have been studied by means of gas-phase experiments and computational investigation. Two types of C–H bond activation are observed in the experiment, and pertinent mechanistic features include inter alia: (i ...
Li, Jilai   +4 more
core   +1 more source

Manganese(I)-Catalyzed C−H Activation : The Key Role of a 7-Membered Manganacycle in H-Transfer and Reductive Elimination [PDF]

open access: yes, 2016
Manganese-catalyzed C−H bond activation chemistry is emerging as a powerful and complementary method for molecular functionalization. A highly reactive seven-membered MnIintermediate is detected and characterized that is effective for H-transfer or ...
Ackermann   +32 more
core   +1 more source

C2-Alkylation of N-pyrimidylindole with vinylsilane via cobalt-catalyzed C–H bond activation

open access: yesBeilstein Journal of Organic Chemistry, 2012
Direct C2-alkylation of an indole bearing a readily removable N-pyrimidyl group with a vinylsilane was achieved by using a cobalt catalyst generated in situ from CoBr2, bathocuproine, and cyclohexylmagnesium bromide.
Zhenhua Ding, Naohiko Yoshikai
doaj   +1 more source

E−H Bond Activation Reactions (E = H, C, Si, Ge) at Ruthenium: Terminal Phosphides, Silylenes, and Germylenes [PDF]

open access: yes, 2009
The placement of a strongly trans-influencing ligand on a ruthenium center opposite an anchoring silyl group of the tetradentate tripodal tris(phosphino)silyl ligand, [SiP^(Ph)_3]^− ([SiP^(Ph)_3]^− = tris(2-(diphenylphosphino)phenyl)silyl), has been ...
Mendiratta, Arjun   +2 more
core   +2 more sources

The role of alkane coordination in C–H bond cleavage at a Pt(II) center [PDF]

open access: yes, 2007
The rates of CFormula H bond activation for various alkanes by [(N–N)Pt(Me)(TFEd3)]+ (N Formula N = ArFormula NFormula C(Me)Formula C(Me)Formula NFormula Ar; Ar = 3,5-di-tert-butylphenyl; TFE-d3 = CF3CD2OD) were studied.
G. S. Chen   +12 more
core   +2 more sources

Synthesis of C70-fragment buckybowls bearing alkoxy substituents

open access: yesBeilstein Journal of Organic Chemistry, 2020
Buckybowls bearing a C70 fragment having two alkoxy groups were synthesized and their structural and optical properties were investigated by single crystal X-ray analysis and UV–vis spectroscopy. In the synthesis of dioxole derivative 5b, the regioisomer
Yumi Yakiyama   +2 more
doaj   +1 more source

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