Results 31 to 40 of about 679,684 (301)

Pd-catalysed ligand-enabled carboxylate-directed highly regioselective arylation of aliphatic acids

open access: yesNature Communications, 2017
Palladium catalysed C-H functionalization ofsp3carbons typically requires the installation and subsequent removal of a temporary directing group. Here the authors report a method allowing C-H functionalization in carboxylic acids in which the carboxylate
Yan Zhu   +5 more
doaj   +1 more source

Direct Regioselective C-H Cyanation of Purines

open access: yesMolecules, 2023
A direct regioselective C-H cyanation of purines was developed through a sequential triflic anhydride activation, nucleophilic cyanation with TMSCN, followed by a process of base-mediated elimination of triflous acid (CF3SO2H).
Luyong Li   +6 more
doaj   +1 more source

Insights on tert-butyl alkylation effects on fluorobenzene

open access: yesScientific African, 2021
Directing effects of substituents on the benzene ring, ortho and para directors by electron donating groups and meta directors using electron withdrawing groups have been studied and reported widely. In particular and for many years, the directing effect
Lewis Mtashobya
doaj   +1 more source

Sofic groups and direct finiteness

open access: yesJournal of Algebra, 2004
We construct an analogue of Neumann's affiliated algebras for sofic group algebras over arbitrary fields. Consequently, we settle Kaplansky's direct finiteness conjecture for sofic groups.
Elek, Gábor, Szabó, Endre
openaire   +3 more sources

SOCIOPSYCHODRAMA: Protagonist-centered sociopsychodrama

open access: yesRevista Brasileira de Psicodrama, 2020
Sociopsychodrama, as a group intervention method, enables directing strategies referenced to different approaches that prioritize protagonization, sociometry, or the spontaneous theater, among other probable theories.
Luís Falivene Alves
doaj   +1 more source

The Goldmark's Report directing to the organization of a subsidiary group of nursing (1919-1923)

open access: yesCultura de los Cuidados, 2012
Study about the directings to the organization of a subsidiary group of nursing on the Goldmark’s Report, 1919–1923. The temporal clipping comprehend the 1919 year, when was determined the committee that would conduct the study that resulted on Goldmark ...
Mary Ann Menezes Freire   +3 more
doaj   +1 more source

Electrocatalyzed direct arene alkenylations without directing groups for selective late-stage drug diversification

open access: yesNature Communications, 2023
Electrooxidation has emerged as an increasingly viable platform in molecular syntheses that can avoid stoichiometric chemical redox agents. Despite major progress in electrochemical C−H activations, these arene functionalizations generally require ...
Zhipeng Lin   +11 more
doaj   +1 more source

Selective synthesis of meta-phenols from bio-benzoic acids via regulating the adsorption state

open access: yesiScience, 2023
Summary: Phenols are important building blocks widely applied in many fields. The pronounced orientational effect of the phenolic hydroxyl group makes achieving selective synthesis of meta-phenols challenging.
Xinze Du   +4 more
doaj   +1 more source

Recent Progress in the Synthesis of Benzoxazin-4-Ones, Applications in N-Directed Ortho-Functionalizations, and Biological Significance

open access: yesMolecules
The development of efficient synthetic procedures to access fused N, O-heterocyclic skeletons has been a pivotal research topic in organic synthesis for several years.
Ziad Moussa   +3 more
doaj   +1 more source

Freedom from control [PDF]

open access: yes, 2018
This thesis examines my directing and leaderships tactics during my time as an MFA in Directing candidate at the University of Texas at Austin and while leading three productions: The Bigot (William Glick), Dry Land (Ruby Rae Spiegel) and ENRON (Lucy ...
Wolf, Hannah Jo Ingram
core   +1 more source

Home - About - Disclaimer - Privacy