Results 31 to 40 of about 9,360 (305)

2-Diphenylphosphinomethyl-3-methylpyrazine

open access: yesMolbank, 2021
The lateral metalation-electrophilic trapping reaction of alkyl-substituted pyrazines has always been challenging and poorly regioselective, with the corresponding derivatives often being isolated in moderate yield.
Tiziana Boccuzzi   +6 more
doaj   +1 more source

Chemical Activation of a Single Melamine Molecule via Isomerization Followed by Metalation with a Copper Atom. [PDF]

open access: yesACS Nano
Scanning probe methods have very successfully been used for inducing on-surface reactions and imaging with high resolution the reaction partners at the single-molecule level. However, the entire sequence of chemically activating an educt, identifying its
Rothe K   +4 more
europepmc   +2 more sources

Metalation: nature’s challenge in bioinorganic chemistry

open access: yes, 2020
The association of proteins with metals, metalation, is challenging because the tightest binding metals are rarely the correct ones. Inside cells, correct metalation is enabled by controlled bioavailability plus extra mechanisms for tricky combinations ...
Glasfeld, Arthur, Robinson, Nigel J.
core   +1 more source

Regiospecific Metalation of Oligobromobenzenes

open access: yes, 2016
The metalation of selected oligobromobenzenes with lithium diisopropylamide (LDA) was investigated. 1,3-Dibromo-substituted benzenes were metalated without special precautions since the resultant 2,6-dibromophenyllithium intermediates are relatively ...
Sergiusz Luliński (2730013)   +1 more
core   +2 more sources

Bidentate Lewis Acids Derived from o‐Diethynylbenzene with Group 13 and 14 Functions

open access: yesChemistryOpen, 2021
Starting from 1,2‐diethynylbenzene, a series of bidentate Lewis acids was prepared by means of hydrometalations, in particular hydrosilylation, hydroboration, hydroalumination and terminal metalation based on group 13 and 14 elements.
Jens Rudlof   +5 more
doaj   +1 more source

Functionalization of 4-bromobenzo[c][2,7]naphthyridine via regioselective direct ring metalation. A novel approach to analogues of pyridoacridine alkaloids

open access: yesBeilstein Journal of Organic Chemistry, 2019
Readily available 4-bromobenzo[c][2,7]naphthyridine undergoes regioselective direct ring metalation at C-5 with TMPMgCl∙LiCl at −40 °C. Quenching with various electrophiles gives a broad range of 5-substituted products, which are building blocks for the ...
Benedikt C. Melzer   +2 more
doaj   +1 more source

Protein metalation by anticancer metal-based drugs revealed through the integration of ESI-MS and XRD measurements. State of the art and open issues

open access: yesFrontiers in Chemical Biology
Over the past 2 decades, solid evidence has emerged to suggest that the mode of action of certain classes of metal-based anti-cancer drugs (e.g., several ruthenium and gold compounds) is largely mediated by their interaction with cellular proteins rather
Antonello Merlino   +2 more
doaj   +1 more source

Calculating metalation in cells reveals CobW acquires CoII for vitamin B12 biosynthesis while related proteins prefer ZnII

open access: yesNature Communications, 2021
The connection between metal binding to proteins and availabilities of different metals in cells has been unclear. Here, the authors report a metalation-calculator that takes into account competition between metals and their variable accessibility, and ...
Tessa R. Young   +8 more
doaj   +1 more source

Aldol elaboration of 4,5,6,7-tetrahydroisoxazolo[4,3-c]pyridin-4-ones, masked precursors to acylpyridones

open access: yesBeilstein Journal of Organic Chemistry, 2012
A core 4,5,6,7-tetrahydroisoxazolo[4,3-c]pyridine-4-one scaffold is elaborated at C-3(Me) by base-mediated aldol condensation to give new 3-alkenyl-4,5,6,7-tetrahydroisoxazolo[4,3-c]pyridine-4-ones, which are masked forms related to the acylpyridone ...
Raymond C. F. Jones   +5 more
doaj   +1 more source

Protein Metalation by Medicinal Gold Compounds: Identification of the Main Features of the Metalation Process through ESI MS Experiments

open access: yesMolecules, 2023
Gold compounds form a new class of promising anticancer agents with innovative modes of action. It is generally believed that anticancer gold compounds, at variance with clinically established platinum drugs, preferentially target proteins rather than ...
Andrea Geri, Lara Massai, Luigi Messori
doaj   +1 more source

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