Results 1 to 10 of about 10,794,162 (307)
Trudy Odesskogo Politehničeskogo Universiteta, 2023 The article deals with discrete mathematical structures used for the analysis and synthesis of passive and active vibration isolation devices. It is shown that approaches of discrete mathematics in the form of kinematic graphs and their further ...
Любов Віталіївна Бовнегра +4 more
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Automatic Structural Synthesis of Planetary Geared Mechanisms using Graph Theory [PDF]
Journal of Applied and Computational Mechanics, 2023 Graphs are an effective tool for planetary gear trains (PGTs) synthesis and for the enumeration of all possible PGTs for transmission systems. In the past fifty years, considerable effort has been devoted to the synthesis of PGTs.
Hind A. Nafeh +2 more
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Nano Select, 2022 ZnO is a conventional activator in sulfur curing systems, but its excessive release can cause adverse effects to the human body and the environment. Using organic zinc instead of zinc oxide not only decreases the amount of zinc but also disperses the ...
Liming Wang +5 more
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Nature Communications, 2020 Transannular construction of medium-sized lactones is entropically unfavoured. Herein, the authors describe a strategy for valuable medium-sized lactone synthesis from available benzaldehydes by selective C-H bond functionalization via palladium carbene ...
Yinghua Yu +5 more
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Nature Communications, 2021 A large number of enantiopure substances, such as those with tetrasubstituted carbon centres bearing several similar substituents, are inaccessible due to the incapability of chiral catalysts/ligands to recognize those substrates.
Shengtong Niu +7 more
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(R)-Baclofen [(R)-4-amino-3-(4-chlorophenyl)butanoic acid]
Acta Crystallographica Section E: Crystallographic Communications, 2022 This article provides the first single-crystal XRD-based structure of enantiopure (R)-baclofen (form C), C10H12ClNO2, without any co-crystallized substances.
Feodor Belov +2 more
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Differentiation between enamines and tautomerizable imines in the oxidation reaction with TEMPO
Nature Communications, 2018 Tautomerization of imines into enamines is the basis of their similar reactivity; however, minor structural changes may lead to different outcomes. Here, the authors show that the reaction of cyclohexanone and amines in presence of TEMPO affords either α-
Xiaoming Jie +5 more
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SYNTHESIS OF LOCAL AREA NETWORK STRUCTURE IN UNCERTAIN CONDITIONS OF INITIAL INFORMATION
Вісник Національного технічного університету "ХПÌ": Системний аналіз, управління та інформаційні технології, 2019 The problem of taking into account the uncertainty of the initial information is identified in the tasks of the structure synthesis of local area networks.
Oryna Oleksiivna Mishchenko +3 more
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Synthesis of difluoromethylated allenes through trifunctionalization of 1,3-enynes
Nature Communications, 2020 Fluorinated or fluoroalkylated allenes are versatile building blocks for medicinal and material chemistry. Here, the authors show a regioselective trifunctionalization of 1,3-enynes proceeding through double C-F bond formation and concomitant ...
Munira Taj Muhammad +9 more
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Radical azidation as a means of constructing C(sp3)-N3 bonds
Green Synthesis and Catalysis, 2020 The azido group is found in large numbers of natural products, drugs, biochemicals and materials and to date, many elegant and useful methods for the synthesis of organic azides and their transformations have been documented. In this review, we provide a
Liang Ge +3 more
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