Results 91 to 100 of about 19,002,772 (320)

Iridium-Catalysed ortho-Directed Deuterium Labelling of Aromatic Esters—An Experimental and Theoretical Study on Directing Group Chemoselectivity

open access: yesMolecules, 2015
Herein we report a combined experimental and theoretical study on the deuterium labelling of benzoate ester derivatives, utilizing our developed iridium N-heterocyclic carbene/phosphine catalysts.
Jennifer Devlin   +5 more
doaj   +1 more source

Directed nickel-catalyzed regio- and diastereoselective arylamination of unactivated alkenes

open access: yesNature Communications, 2021
Few methods exist to add a carbon and nitrogen atom across an unfunctionalized alkene. Here the authors show a method to regio- and diastereoselectively add aryl and amino groups to terminal and internal alkenes, via nickel catalysis and a removable ...
Leipeng Xie   +7 more
doaj   +1 more source

On direct products of regular $p$-groups [PDF]

open access: yesProceedings of the American Mathematical Society, 1973
We prove that, for each prime p, there exists a regular /»-group Hip) with the property that, if G is a regular /»-group and GxH(p) is regular, then the derived group of G has exponent/?. This provides a strong converse to a theorem of Grun. Introduction. It has long been known that the direct product of regular /»-groups need not be regular. The first
openaire   +1 more source

The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli   +3 more
wiley   +1 more source

Palladium-Catalyzed β-C(sp3)–H Bond Arylation of Tertiary Aldehydes Facilitated by 2-Pyridone Ligands

open access: yesMolecules
2-Pyridone ligand-facilitated palladium-catalyzed direct C–H bond functionalization via the transient directing group strategy has become an attractive topic.
Ziting Xu   +4 more
doaj   +1 more source

Experimentation in Algerian Theatrical Directing Critical Reading of Contemporary Theatrical Performances [PDF]

open access: yesZiglôbitha
: The intervention addresses the concept of experimentation in directing practice and the concept’s connection to global directing trends and the artistic and intellectual results that have resulted from it in contemporary theatrical practice .so the ...
Kada Bahri & Elhabib Soualmi
doaj   +1 more source

Palladium-Catalyzed β-C-H Arylation of Aliphatic Aldehydes and Ketones Using Amino Amide as a Transient Directing Group.

open access: yesOrganic Letters, 2019
This paper describes a new amino-amide-based transient directing group (TDG). The TDG can exhibit better performance in the Pd-catalyzed arylation of aliphatic aldehydes and ketones. This reaction showed good substrate compatibility and regioselectivity.
Cong Dong   +3 more
semanticscholar   +1 more source

Increased Risk of Sarcomas in Children With Congenital Anomalies: Findings From the Genetic Overlap Between Anomalies and Cancer in Kids (GOBACK) Registry Linkage Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters   +17 more
wiley   +1 more source

Fungsi Pengarahan Kepala Ruang dan Ketua Tim Meningkatkan Kepuasan Kerja Perawat Pelaksana

open access: yesJurnal Keperawatan Indonesia, 2011
Abstrak Penelitian ini bertujuan mengetahui pengaruh fungsi pengarahan kepala ruang dan ketua tim terhadap kepuasan kerja perawat pelaksana di unit rawat inap.
Achmad Sigit S   +2 more
doaj   +1 more source

Phosphorus(III)-assisted regioselective C–H silylation of heteroarenes

open access: yesNature Communications, 2021
Indole C-H silylation preferentially occurs at the C3 and C2 positions, while functionalization of the benzene core (C4-C7 sites) remains challenging.
Dingyi Wang   +7 more
doaj   +1 more source

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