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The hydrodefluorination of CF3-substituted alkenes can be catalyzed by a nickel(II) hydride bearing a pincer ligand. The cata-lyst loading can be as low as 1 mol%. gem-Difluoroalkenes containing a number of functional groups can be formed in good to excellent yields, by a radical mechanism initiated by H• transfer from the nickel hydride. The relative reactivity of various substrates supports the proposed mechanism, as does a TEMPO trapping experiment.
This article was published in the following journal.
Name: Journal of the American Chemical Society
Nickel-catalyzed asymmetric hydrogenation of several types of alkenes proceeds in high enantioselectivity, using acetic acid or water as the hydrogen source and indium powder as electron donor. The sc...
Iron-catalyzed hydrogen atom transfer-mediated intermolecular C-C coupling reactions between alkenes and tosylhydrazones, followed by in situ cleavage of the tosylhydrazine intermediates using EtN, ar...
Chiral polyfluoroarene derivatives are an important scaffold in chemistry. An unprecedented enantioselective C-H alkylation of polyfluoroarenes with alkenes is described. The reaction employs bulky ch...
The iridium-catalyzed transfer hydrogenation of alkenes using 1,4-dioxane as a hydrogen donor is described. The use of 1,2-bis(dicyclohexylphosphino)ethane (DCyPE), featuring bulky and highly electron...
A range of Ru-, Rh-, or Pd-catalyzed vinylic C-H/C-H cross-coupling reactions of olefins have been demonstrated to provide 1,3-dienes, using a quantitative amount of metal oxidants. Although transfer ...
The former Nickel Directive was introduced in EU in 1994 limiting the release of nickel from items intended for prolonged contact with skin. The nickel regulation entered into full force i...
There is little evidence on the effect of a nickel-free diet on gastroesophageal reflux disease (GERD). We hope to determine if a nickel-free diet improves GERD symptoms in patients with a...
The purpose of this study is to compare clinical outcomes of patients with self reported nickel sensitivity undergoing primary total knee arthroplasty (TKA) with conventional, standard-of-...
This study evaluates the effects of Nickel oral hyposensitization treatment (NiOHT) on health-related quality of life (HRQoL) of patients suffered from Systemic Nickel Allergy Syndrome (SN...
In the last few years, a new clinical entity has emerged which includes patients who consider themselves to be suffering from problems caused by wheat and/or gluten ingestion, even though ...
Specific alloys not less than 85% chromium and nickel or cobalt, with traces of either nickel or cobalt, molybdenum, and other substances. They are used in partial dentures, orthopedic implants, etc.
Enzymes catalyzing the transfer of an acetyl group, usually from acetyl coenzyme A, to another compound. EC 2.3.1.
The enzyme catalyzing the transfer of 2-deoxy-D-ribose from thymidine to orthophosphate, thereby liberating thymidine. EC 184.108.40.206.
An enzyme catalyzing the transfer of a phosphate group from 3-phospho-D-glycerate in the presence of ATP to yield 3-phospho-D-glyceroyl phosphate and ADP. EC 220.127.116.11.
Alkenes with the general formula H2C=CH-CH2-R.