- Diamondoid hydrazones and hydrazides: Sterically demanding ligands for Sn/S cluster design
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A series of new adamantane and diamantane hydrazides was synthesized and coupled with organo-functionalized Sn/S clusters of the general type [R 1Sn4S6] (R1 = CMe2CH 2COMe) to form diamondoid-decorated Sn/S clusters. The new ligand precursors as well as the resulting hybrid compounds were analyzed by NMR spectroscopy, mass spectrometry, and single-crystal X-ray diffraction, and first insights were gained in the installation of sterically highly demanding and at the same time rigid mono-, di-, and trifunctionalized diamondoid ligands on tetrelchalcogenide cages.
- Barth, Beatrix E. K.,Tkachenko, Boryslav A.,Eussner, Jens P.,Schreiner, Peter R.,Dehnen, Stefanie
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- Oxidation of Deactivated Cage Substrates in the System H2SO4–HNO3
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Abstract: The kinetics of oxidation of 16 carboxylic acid esters of the adamantaneseries in the systemH2SO4–HNO3have been studied, and the effective rate constants have been determined. Thereaction is described by the pseudo-first-order kinetic equation. The primarykinetic isotope effect has been estimated at 2.9±0.3. The rate-determining stepof the oxidation process is cleavage of the adamantane C–H bond. The presence ofan ethyl group at the bridgehead position increases the reactivity of adamantanesubstrates toward oxidation, whereas methyl, ethoxycarbonyl, andethoxycarbonylmethyl groups reduce the reactivity.
- Grin?, I. S.,Ivleva, E. A.,Klimochkin, Yu. N.,Uchaev, I. S.
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p. 412 - 421
(2020/04/27)
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- Design and synthesis of new adamantyl-substituted antileishmanial ether phospholipids
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A series of new 2-[3-(2-alkyloxy-ethyl)-adamantan-1-yl]-ethoxy substituted ether phospholipids was synthesized and their antileishmanial activity was evaluated against Leishmania infantum amastigotes. The majority of the new analogues were significantly l
- Papanastasiou, Ioannis,Prousis, Kyriakos C.,Georgikopoulou, Kalliopi,Pavlidis, Theofilos,Scoulica, Effie,Kolocouris, Nicolas,Calogeropoulou, Theodora
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supporting information; experimental part
p. 5484 - 5487
(2011/01/12)
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- A CONVENIENT SYNTHESIS OF 1,3-DIVINYLADAMANTANE
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1,3-Divinyladamantane was prepared in 30percent overall yield by LiAlH4 reduction of 1,3-bis(carboxymethyl)adamantane, conversion of the resulting diol to the borate ester, and pyrolysis of the ester in vacuo.
- Majerski, Zdenko,Skare, Danko,Vulic, Ljubica
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- Unsaturated esters of adamantane containing diols and thermo-resistant cross-linked polymers therefrom
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Diacrylate and dimethacrylate esters corresponding to the formula STR1 wherein R and R' are hydrogen or methyl and A is either a sigma (?) bond; a (CH2)η radical where η is an interger that may vary from one through four; or phenylene, or an alkyl derivative thereof. The new adamantane containing difunctional olefinic monomers can then be polymerized, or copolymerized with other acrylic type olefinic monomers to produce polymers with unusual physical properties, including unusual hardness, inertness to degradable agents, and resistance to heat.
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