21797-13-7Relevant articles and documents
Werner, H.,Bertleff, W.,Schubert, U.
, p. 199 - 204 (1980)
Oligomers and soluble polymers from the vinyl polymerization of norbornene and 5-vinyl-2-norbornene with cationic palladium catalysts
Blank, Frederik,Scherer, Harald,Janiak, Christoph
, p. 1 - 9 (2010)
Oligomeric vinyl polynorbornene (2 to ~12 monomer units) was obtained via hydrooligomerization of norbornene (NB) using the cationic palladium complexes [Pd(PPh3)n(NCCH3)4-n] (BF4)2 [n = 0 (1), 3 (2)] at different hydrogen pressures. The vinyl polymerization of norbornene (NB) in the ionic liquid N-butyl-N-trimethylammonium bis(trifluoromethylsulfonyl)imide (BtMA +NTf2-) with [Pd(NCCH3) 4](BF4)2 led to soluble polynorbornenes (with several hundred monomer units) at different temperatures and molar NB:Pd ratios. The norbornene derivative 5-vinyl-2-norbornene (VNB) was oligomerized in high yield with 1 in CH3NO2 primarily through the (endocyclic) norbornene double bond but also through both the norbornene and (exocyclic) vinyl double bond for about every second monomer (by 1H NMR). A 2D 1H,13C-HSQC NMR analysis suggests a β-hydrogen elimination after insertion of a norbornene double bond as chain-termination mechanism. The conversion of NB or VNB increased with temperature and a lower NB:Pd and VNB:Pd ratio, respectively. The vinyl double bond in VNB slowed down the insertion rate drastically when compared with NB (activity decrease by a factor of 102).
Cage Effect on Oxidation of Dimethyl Sulfoxide via Pd2L4 Prolate Spheroids
Hwang, Seo Young,Kim, Dongwon,Lee, Haeri,Jung, Ok-Sang
, p. 513 - 517 (2020)
Self-assembly of PdX2 (X? = NO3 ?, BF4 ?, and CF3SO3 ?) with 2,6-bis(4′-nicotinamidephenoxy)naphthalene (L) forms a series of [Pd2L4]X4 prolate spheroids. The O donors of two Me2SO molecules within the prolate spheroid cage are oriented toward the Pd(II) metal centers. In the presence of H2O2, the nestled Me2SO within the cage is efficiently oxidized to Me2SO2 at room temperature.
Molecular balloon, Pd6L8 cages: Recognition of alkyl sulfate surfactants
Jung, Ok-Sang,Kim, Dongwon,Lee, Haeri,Oh, Hyejin
supporting information, p. 2841 - 2844 (2020/03/17)
The unique molecular balloon system of [Pd6L8](NO3)12 (an inner cavity of 19 × 21 × 25 ?3 ← 13 × 13 × 13 ?3) was carried out via the anion exchange of nitrate with alkyl sulfates.
Terminal olefins to linear α,β-unsaturated ketones: Pd(II)/hypervalent iodine co-catalyzed wacker oxidation-dehydrogenation
Bigi, Marinus A.,White, M. Christina
supporting information, p. 7831 - 7834 (2013/07/19)
Development of a mild (35 C, no Bronsted acids) tandem Wacker oxidation-dehydrogenation of terminal olefins was accomplished using palladium(II) and hypervalent iodine co-catalysis. The reaction affords linear aryl and alkyl α,β-unsaturated ketones directly from readily available terminal olefins in good yields (average 75% per step) with excellent functional group tolerance and chemo- and stereoselectivities. The hypervalent iodine co-catalyst was found to be critical for dehydrogenation but was not effective as a stoichiometric oxidant.