102-69-2Relevant articles and documents
Aminated Polystyrene-Bound Rhodium Carbonyl Clusters as a Catalyst for Deoxygenation of Various N-O Bonds
Kaneda, Kiyotomi,Takemoto, Tetsuya,Imanaka, Toshinobu
, p. 1759 - 1762 (1988)
Aminated polystyrene-bound rhodium carbonyl cluster complexes are prepared by treatment of Rh6(CO)16 with various aminated polystyrenes.The polymeric rhodium complexes show a catalytic activity for deoxygenation of nitro compounds, oximes, hydroxylamines, and N-oxides under the conditions using CO and H2O.The recovered rhodium complexes maintain the deoxygenation ability with a small loss of the selectivity.
Harmon et al.
, p. 2809 (1974)
The selective preparation of n-propylamines by the rhodium catalysed reaction of ethylene and syngas with alkylamines
Jones, M. D.
, p. 403 - 408 (1989)
The aminoethylation of ethylene with a primary amine has been shown to provide a highly selective route to n-propylamines; the rhodium catalysed reaction of n-propylamine with ethylene and syngas (2/1, H2/CO) affords di-n-propylamine with 98percent selectivity (with respect to ethylene).The reaction of amines of the type RR1NH with the ethylene/syngas mixture and a rhodium catalyst provides a highly selective and general route to the n-propylamines RR1NPr (R=Pr, R1=H; R=t-Bu, R1=H; R=n-Bu, R1=H; R=C8H17, R1=H, R=R1=Pr; R=HOCH2Ch2, R1=H, and R=PhCH(OH)CH2, R1=H).
Continuous Production of Dialkylamines by Selective Hydrogenation of Nitriles on a Nickel-Zeolite Catalyst
Popov, Yu. V.,Mokhov,Latyshova,Panov,Pletneva, M. Yu.
, p. 1778 - 1782 (2017)
Hydrogenation of aliphatic nitriles in the presence of nickel supported by NaX zeolite was studied. The data obtained were used to develop a continuous method for obtaining dialkylamines with the yield of the target product of up to 98%.
Chemical modification of niobium layered oxide by tetraalkylammonium intercalation
Shiguihara, Ana L.,Bizeto, Marcos A.,Constantino, Vera R. L.
, p. 1366 - 1376 (2010)
Chemical modification of the layered K4Nb6O 17 material was systematically investigated through the reaction of its proton-exchanged form (H2K2Nb6O 17) in alkaline solutions containing tetramethylammonium (tma +), tetraethylammonium (tea+) or tetrapropylammonium (tpa+) cations. The intercalated amount reaches 50percent (for tma +), 25percent (for tea+) and 15percent (for tpa+) of the H2K2Nb6O17 negative charge (concerning the exchange at interlayer I) due to the steric hindrance of larger cations. Hexaniobate samples present (020) basal reflections equal to 23.0, 26.3 and 26.5 A? once intercalated respectively with tma+, tea + and tpa+. When samples are heated above 200-250 °C, CO2 evolution is observed; Hofmann elimination reaction is also detected for hexaniobate-tpa+ samples. Scanning electron microscopy images show the predominance of plate-like particles; stick-like particles are also observed for samples containing bulky ions. The intercalation reaction is promoted in the order tma+ > tea+ > tpa+, while the formation of a dispersion of colloidal particles is facilitated in the inverse order.
About selenidostannates. I: Synthesis, structure, and properties of [Sn2Se6]4-, [Sn4Se10]4-, and [Sn3Se7]2-
Fehlker, Andreas,Blachnik, Roger
, p. 411 - 418 (2001)
The selenidostannates [(C4H9)2NH2]4Sn 2Se6·H2O (I), [(C4H9)2NH2]4Sn 4Se10·2H2O (II) und [(C3H7)3NH]2-Sn3Se 7 (III) were prepared by hydrothermal syntheses from the elements and the amines. I crystallizes in the monoclinic spacegroup P21/n (a = 1262.9(3) pm, b = 1851.3(4) pm, c = 2305.2(4) pm, β = 104.13(3)° and Z = 4). The [Sn2Se6]4- anion consists of two edge-sharing tetrahedra. II crystallizes in the orthorhombic spacegroup Pna21 (a = 2080.3(4) pm, b = 1308.2(3) pm, c = 2263.5(5) pm and Z = 4). The anion is formed from four SnSe4 tetrahedra which are joined by common corners to the adamantane cage [Sn4Se10]4-. III crystallizes in the orthorhombic spacegroup Pbcn (a = 1371.1(3) pm, b = 2285.4(5) pm, c = 2194.7(4) pm and Z = 8). The anion is a chain, built from edge-sharing [Sn3Se5Se4/2]2- units, in which two corner sharing tetrahedra are connected to a trigonal bipyramid by an edge of one and a corner of the other tetrahedron. The results of the TG/DSC measurements and of temperature dependent X-ray diffractograms reveal that I and II decompose at first by release of minor quantities of triethylammonium to compounds with layer structure and larger cell dimensions. At still higher temperature the rest of triethylammonium and H2Se is evolved, leaving SnSe2 and Se in the bulk. The former decomposes partially at the highest temperature to SnSe. In the measurements of III the complex intermediate compound was not observed. III decomposes directly to SnSe2. Wiley-VCH Verlag GmbH, 2001.
Jolly
, p. 4958,4959 (1955)
Cyanidosilicates—Synthesis and Structure
Harloff, J?rg,Michalik, Dirk,Nier, Simon,Schulz, Axel,Stoer, Philip,Villinger, Alexander
supporting information, p. 5452 - 5456 (2019/03/21)
Starting from fluoridosilicate precursors in neat cyanotrimethylsilane, Me3Si?CN, a series of different ammonium salts [R3NMe]+ (R=Et, nPr, nBu) with the novel [SiF(CN)5]2? and [Si(CN)6]2? dianions was synthesized in facile, temperature controlled F?/CN? exchange reactions. Utilizing decomposable, non-innocent cations, such as [R3NH]+, it was possible to generate metal salts of the type M2[Si(CN)6] (M+=Li+, K+) via neutralization reactions with the corresponding metal hydroxides. The ionic liquid [BMIm]2[Si(CN)6] (m.p.=72 °C, BMIm=1-butyl-3-methylimidazolium) was obtained by a salt metathesis reaction. All the synthesized salts could be isolated in good yields and were fully characterized.
Catalytic hydrogenation of amides to amines under mild conditions
Stein, Mario,Breit, Bernhard
supporting information, p. 2231 - 2234 (2013/03/28)
Under (not so much) pressure: A general method for the hydrogenation of tertiary and secondary amides to amines with excellent selectivity using a bimetallic Pd-Re catalyst has been developed. The reaction proceeds under low pressure and comparatively low temperature. This method provides organic chemists with a simple and reliable tool for the synthesis of amines. Copyright
