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Showing 1 to 20 of 90101 for “"2'"”.
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2-acilaminoacritlatos en cicloadiciones [2+2]: síntesis de alfa, beta-C4Ser
Se ha optimizado la reacción de cicloadición [2+2] en ausencia de ácidos de Lewis entre 2-acetamidoacrilato de metilo y 1,1-dietoxietileno. A partir del producto obtenido de la reacción de cicloadición, tras una serie de transformaciones, se han obtenido diversas (1R*, 2R*)-c4Ser protegidas. …
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Direct arylation of 2-pyrones, coumarins, 2-pyridinones and 2-quinolones
Direct arylation via C-H activation displays a number of advantages over traditional (Suzuki-Miyaura, Stille, etc.) coupling reactions. The 2-pyrone, coumarin, 2-pyridinone and 2-quinolone moieties are prevalent in numerous compounds which exhibit biological activity. In addition, due to the varied …
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Galois 2 Groups Unramified Outside 2
Finally, we look at some nonabelian, real, Galois extensions K of Q , such that GK(2) is not free but has a free subgroup of index 2. In particular we focus on finite split metacyclic extensions and again we explicitly describe the structure of G K(2).
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Comparative Electrochemistry, Electronic Absorption Spectroscopy and Spectroelectrochemistry of the Monometallic Ruthenium Polypyridyl Complexes, [Ru(Bpy)(Dpb)2](Pf6)2, [Ru(Bpy)2(Dpb)](Pf6)2, [Ru(Bpy)2(Dpq)](Pf6)2, [Ru(Bpy)(Dpq)2](Pf6)2
The novel compound [Ru(bpy)(dpb)–(PFâ )â was synthesized, in a manner similar to the literature synthesis of [Ru(bpy)(dpq)â (PFâ )â . For the sake of completeness, the related analogs, [Ru(bpy)â (dpb)](PFâ )â , [Ru(bpy)â (dpq)](PFâ )â and [Ru(bpy)(dpq)â ](PFâ )â were also synthesized. Alumina …
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The preparation of 2-phenylcyclohexanone and substituted 2-arylcyclohenanones [i.e. 2-arylcyclohexanones]
Call number: LD2668 .T4 1953 H5
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The preparation of 2-phenylcyclohexanone and substituted 2-arylcyclohenanones [i.e. 2-arylcyclohexanones]
Call number: LD2668 .T4 1953 H5
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Preparation and Chelation Studies of 2-(2'-Ethoxyethoxy) Ethyl-2, 3-Diaminopropyl Ether
No abstract prepared.
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Neue Carborane aus CB 2 -, CB 3 - und C 2 B 2 -Organoboranen
In der vorliegenden Arbeit werden Synthese und Eigenschaften von Tris(3,3-dimethyl-1-butinyl)boran, des ersten donorfreien Trisalkinylborans, und seiner Addukte (Donor = Pyridin, Triphenylphosphin, Tetrahydrofuran) beschrieben. Die Röntgenstrukturanalysen zeigen, daß die B-C-Bindungslängen im …
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Interference between coherences established among the 5D5/2-5P3/2 and 5P3/2-5S1/2 energy levels within atomic rubidium
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2022-11-11 without embargo terms
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A study of the aromatic cyclodehydration of 2-(2-naphthylmethyl)- 2'-chloro-5'-methylbenzophenone
In a recent study of cyclodehydrogenation reactions of potential carcinogenic or carcinolytic hydrocarbons Zajac pointed out that ring closure of 12-(3-methylphenyl)- benz[a]anthracene might take place at either of the two ortho positions or the phenyl ring. These positions are not equivalent with …
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Neue Organoborane aus C 2 B 2 -Bausteinen
Die vorliegene Arbeit beschäftigt sich mit der Reaktivität von Boriranyliden-boranen. Im ersten Teil werden Umsetzungen mit B2Cl4 und B2Br4 beschrieben. Die dabei isolierten Tetraborylmethane und die ebenfalls gebildeten isomeren Diborylmethylenborane erhält man in guten Ausbeuten. Im weiteren …
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Poly(2-alkyl-2-oxazoline) containing multiphase systems
This research is focused on the polymerization of 2-alkyl-2-oxazoline homopolymers and 2-alkyl-2-oxazoline containing copolymers with well-defined structures. In addition, the potential of selected materials as polymer blend compatibilizers was briefly evaluated. The polymerization of …
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Brekkkutgata 2
Um er að ræða lokaverkefni í byggingariðnfræði sem felst í því að hanna tveggja hæða einbýlishús með að hámarki 150 fm grunnflöt ásamt því að aðrar kröfur voru gerðar varðandi útlit, efnisval o.fl. Húsið sem höfundar hönnuðu er staðsett á lóð að Brekkugötu 2 í Garðabæ. Húsið er tveggja hæða …
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Árhvammur 2
Lokaverkefnið fól í sér að finna tveggja hæða hús og gera tillögur að breytingum og hanna og teikna eftir þeim. Krafan var að neðri hæð skal vera steypt og efri hæð úr timbri. Teiknisett inniheldur: Aðaluppdrætti, verkteikningar, burðarvirk og lagnateikningar. Skýrslan inniheldur: Verklýsingar, …
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1/2
The Situation. Downtown. An alleyway and adjacent building form the volumetric parametric parameters for a hypothetical, semi-urban addition. The Program. A synthesis of bookstore, art gallery, and cafe outlines the necessary conditions to be featured in the proposed building. The Strategy. To …
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Size Exclusion Chromatography of Poly(2-ethyl-2-oxazoline) Homopolymers and Poly(ethylene oxide)-b-Poly(2-ethyl-2-oxazoline) Copolymers
Size exclusion chromatography is the method of choice for characterizing molecular weights and molecular weight distributions of polymers. An important advancement in SEC is multidetection SEC which includes multi-angle laser light scattering, viscometry, refractive index and UV spectroscopy to …
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Theoretical Investigation of Two-Color, Two-Photon, 6s(2)S(1/2) → 5d(2)D(j) → 11p(2)P(3/2) Excitation and Depolarization Spectra in Atomic Cesium
<p>The theoretical investigation of two-photon, two-color intensity and depolarization spectra for the 6s<sup>2</sup>S<sub>1/2</sub> → 5d<sup>2</sup>D<sub>j</sub> → 11p<sup>2</sup>P<sub>3/2</sub> transition in atomic caesium is considered. For quadrupole-dipole transitions the dependence of …
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