Search results for "Hf"
showing 10 items of 909 documents
Stereoselective Synthesis of New 4-Aryl-5-indolyl-1,2,4-triazole S- and N-β-Galactosides: Characterizations, X-ray Crystal Structure and Hirshfeld Su…
2023
5-(1H-Indol-2-yl)-4-phenyl-2,4-dihydro-3H-1,2,4-triazole-3-thione 1a and 4-(4-chlorophenyl)-5-(1H-indol-2-yl)-2,4-dihydro-3H-1,2,4-triazole-3-thione 1b were galactosylated in the presence of NaHCO3 in ethanol to produce S-galactosides 3,4, whereas, in the presence of K2CO3 in acetone they produced a mixture of S- and N-galactosides 3-6 with a higher yield of S-galactosides over the respective N-galactosides. Improvement in the yields of N-galactosides was produced by thermal migration of the galactosyl moiety from sulfur to nitrogen using fusion. β-Stereoselectivity of galactosylation was determined using the coupling constant value 3J1,2, which exceeded 9.0 Hz in all prepared galactos…
One-Pot Synthesis, X-ray Single Crystal and Molecular Insight of Enaminone-Based β-Morpholino-/N-Methylpiperazinyl-/Pyrrolidinylpropiophenone
2020
One-pot synthesis of three enaminones, (E)-1-(4-chlorophenyl)-3-morpholinoprop-2-en-1-one 1, (E)-1-(4-chlorophenyl)-3-(4-methylpiperazin-1-yl)prop-2-en-1-one 2, and (E)-1-(4-chlorophenyl)-3-(pyrrolidin-1-yl)prop-2-en-1-one 3 were achieved. The synthetic protocol via three components reaction of p-chloroacetophenone with DMFDMA (N,N-dimethylformamid-dimethylacetal) and the corresponding secondary amines (morpholine/N-methylpiperazine/pyrrolidine) in dioxane under heating for 2.5–4 h at 102 °C yielded the requisite enaminones. This protocol has the advantage of no separation of intermediate, no need for column purification with quantitative yield for the target compounds. The chemical feature…
Synthesis and Solid-State X-ray Structure of the Mononuclear Palladium(II) Complex Based on 1,2,3-Triazole Ligand
2022
Herein, we described the synthesis and X-ray crystal structure of the new [Pd(3)2Cl2] complex with 1,2,3-triazole-based ligand (3). In the unit cell, there are two [Pd(3)2Cl2] molecules, and the asymmetric unit comprised half of this formula due to the presence of an inversion symmetry element at the Pd(II) center. The monoclinic unit cell volume is 1327.85(6) Å3, with crystal parameters of a = 10.7712(2) Å, b = 6.8500(2) Å, and c = 18.2136(6) Å, while β = 98.851(2)°. The structure comprised two trans triazole ligand units coordinated to the Pd(II) ion via one of the N-atoms of the triazole moiety. In addition, the Pd(II) is further coordinated with two tran…
Synthesis, Characterization, and Cytotoxicity of New Spirooxindoles Engrafted Furan Structural Motif as a Potential Anticancer Agent
2022
A new series of spirooxindoles based on ethylene derivatives having furan aryl moiety are reported. The new hybrids were achieved via [3 + 2] cycloaddition reaction as an economic one-step efficient approach. The final constructed spirooxindoles have four contiguous asymmetric carbon centers. The structure of 3a is exclusively confirmed using X-ray single crystal diffraction. The supramolecular structure of 3a is controlled by O···H, H···H, and C···C intermolecular contacts. It includes layered molecules interconnected weak C–H···O (2.675 Å), H···H (2.269 Å), and relatively short Cl···Br interhalogen interactions [3.4500(11)Å]. Using Hirshfeld analysis, the percentages of these intermolecul…
Study on the Reputation of the (MASS) Media in Romania
2021
Abstract Part of a bigger research project conducted by Media Reputation Lab (Media REP Lab) on the reputation of media in Europe, the study explores the reputation of media among informed population in Romania. A sample of 100 cases was involved in the online survey taking place in December 2019. The results provide a description of the country’s media reputation (media in general: radio, print, digital and television). For each one of these media, the valuation obtained by each of the reputational attributes (credibility, rigor, impartiality, willingness to rectify) by the informed population would be indicated. Moreover, insights on the knowledge and use, as well as on the reputation (ov…
Asiantuntijuus digiajalla
2019
Kirja-arvio: Richard Susskind & Daniel Susskind: The Future of the Professions. How Technology Will Transform the Work of Human Experts. Oxford University Press. Oxford 2016. 368s. nonPeerReviewed
Ihmiskeskeistä digitalisaatiota ja palvelua etsimässä
2020
Kirja-arvostelu teoksesta Toivonen, Marja & Saari, Eveliina (toim.): Human Centered Digitalization and Services. Translational Systems Sciences vol 19. Singapore, Springer, 2019, 323 sivua. nonPeerReviewed
Työhyvinvoinnin psykologiaa, osa 2
2019
Kirja-arvio: Anne Mäkikangas, Saija Mauno & TaruFeldt (toim.) (2017) Tykkää työstä. Työ hyvinvoinnin psykologiset perusteet. Jyväskylä: PSkustannus. 220 s. nonPeerReviewed
Työpolitiikan koko kattaus
2019
Kirja-arvio: Pertti Koistinen: Työ, työvoima & politiik-ka. Tampere. Vastapaino. 2014, 443s. nonPeerReviewed
Knowledge Retention within Small and Mediumsized Enterprises
2019
Abstract In the constantly changing nowadays economy, all organizations have to be prepared to embrace all technological innovation and become good competitors in the market place all over the world. This need puts a special emphasize on the ability of a company to evolve through employee ability to grow professional. The retention of good, qualified employee is a complex process, because of the importance of the knowledge for the financial efficiency of a company. This article aims is to examine knowledge retention as an advantage of companies in this era of information, an era in which organizations view their employees as the main sources of competitive edge, acknowledging, at the same t…