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The holomorphic function h is constructed such that h h z = z!; this function is interpreted as square root of Factorial. 相似文献
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A. Ignatov V. Bellini J.P. Bocquet M. Capogni M. Casano A. D’Angelo J.-P. Didelez A. Fantini G. Gervino B. Girolami A. Giusa M. Guidal V. Kouznetsov A. Lapik A. Lleres A. Mushkarenkov L. Nicoletti D. Rebreyend N. Rudnev G. Russo M.-L. Sperduto M.-C. Sutera 《Progress in Particle and Nuclear Physics》2008,61(1):253-259
New experimental approach to study meson photoproduction in nuclei is discussed. It is based on the measurement of the recoil nucleon as a tagger for identification of the initial step of reaction. Propagation of mesons and nucleons within a nucleus is described by the Intra-Nuclear Cascade (INC) model. Simulations and preliminary experimental data for the deuteron target obtained at GRAAL are presented. 相似文献
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A. D. Panov J. H. Adams Jr. H. S. Ahn G. L. Bashindzhagyan J. W. Watts J. P. Wefel J. Wu T. G. Guzik V. I. Zatsepin J. Isbert K. C. Kim M. Christl E. N. Kouznetsov M. I. Panasyuk E. B. Postnikov E. S. Seo N. V. Sokolskaya J. Chang 《Bulletin of the Russian Academy of Sciences: Physics》2011,75(3):319-322
A strong anomaly in form of a wide peak in the energy range 300–800 GeV was discovered in the first measurements of the electron spectrum in the energy range from 20 GeV to 3 TeV by the balloon-borne experiment ATIC [1]. The experimental data processing and analysis of the electron spectrum with different criteria for selection of electrons completely independent of the results reported in [1] is employed in the present paper. New independent analysis generally confirms the results of [1] but shows that the spectrum in the region of the anomaly is represented by a number of narrow peaks. Measured spectrum is compared to the spectrum of [1] and to the spectrum of the Fermi/LAT experiment. 相似文献
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Leonor Y. Vargas Méndez Vladimir V. Kouznetsov 《Central European Journal of Chemistry》2011,9(5):877-885
We report an efficient and useful synthesis of new attractive spiropiperdine scaffolds 4 based on an intramolecular acyl transfer process in 1′-acyl-1-benzyl-3′,4′-dihydro-1′H-spiro[piperidine-4,2′-quinolines]
3 using simple and mild debenzylation reaction conditions (HCOONH4/Pd/C). The compounds 3 were prepared by acylating 1-benzyl-4′-methyl-3′,4′-dihydro-1′H-spiro[piperidine-4,2′-quinolines] 2 that are easily available from 1-benzyl-4-piperidone 1. The intramolecular character of this process was proven primarily through a crossover experiment technique. Through an examination
of all spectroscopic information (1H, 13C NMR, VT-1H NMR, and 2D NMR) it was possible to correctly predict amide configurations and piperidine ring conformations of starting and final spiropiperidine
compounds.
相似文献
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Marlyn C. Ortiz Villamizar Carlos E. Puerto Galvis Silvia A. Pedraza Rodríguez Fedor I. Zubkov Vladimir V. Kouznetsov 《Molecules (Basel, Switzerland)》2022,27(23)
A rapid, efficient, and original synthesis of novel pyrido[3,2,1-de]phenanthridin-6-ones is reported. First, the key cinnamamide intermediates 8a–f were easily prepared from commercial substituted anilines, cinnamic acid, and 2-bromobenzylbromide in a tandem amidation and N-alkylation protocol. Then, these N-aryl-N-(2-bromobenzyl) cinnamamides 8a–f were subjected to a TFA-mediated intramolecular Friedel-Crafts alkylation followed by a Pd-catalyzed direct C–H arylation to obtain a series of potentially bioactive 4-phenyl-4,5-dihydro-6H,8H-pyrido[3,2,1-de]phenanthridin-6-one derivatives 4a–f in good yields. Finally, the toxicological profile of the prepared final compounds, including their corresponding intermediates, was explored through in silico computational methods, while the acute toxicity toward zebrafish embryos (96 hpf-LC50, 50% lethal concentration) was also determined in the present study. 相似文献
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Vladimir Kouznetsov Alirio Palma Claude Ewert Alexei Varlamov 《Journal of heterocyclic chemistry》1998,35(4):761-785
Different synthetic paths that produce the reduced quinoline cycle are discussed: among them intramolecular cyclization, intra- and inter [4+2] cycloaddition reactions and other methods. Some chemical properties of tetrahydroquinolines are also analyzed. 相似文献
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New effective approach to the synthesis of a wide variety of C-2 nitro or aminophenyl substituted quinolines was reported
using diverse intermediate 4-(2-oxopyrrolinidyl-1)-tetrahydroquinolines that were prepared by a three component imino Diels-Alder
reaction was reported. The key aromatisation process occurs cleanly with the loss of the 2-oxopyrrolinidyl-1 fragment. 相似文献
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Leonor Y. Vargas Méndez Vladimir V. Kouznetsov 《Journal of heterocyclic chemistry》2008,45(3):927-930
New diverse N‐aryl‐N‐[1‐furyl(thienyl)but‐3‐enyl]amines (homoallylamines) or 2‐(N‐arylmethylamino)‐2‐furyl(thienyl)acetonitriles (α‐aminonitriles) were easily prepared in good to excellent yields by an indium‐mediated Barbier‐type reaction between N‐hetarylaldimines and allyl bromide in MeOH or a direct three component reaction between anilines, hetaryl aldehydes and trimethylsilyl cyanide in the presence of a catalytic amount of molecular iodine at room temperature, respectively. The entire set of amines was characterized by IR, 1H and 13C NMR spectroscopy. 相似文献