Synthesis of triphenylantimony (hydroxo)diketonates by oxidative methods
摘要:
Triphenylantimony (hydroxo)acetylacetonate, (hydroxo)trifluoroacetylacetonate, and (hydroxo)pivaloyltrifluoroacetonate were prepared in 85-98 % yields by oxidation of triphenylantimony with hydrogen peroxide or tert-butyl hydroperoxide in the presence of beta-diketones.
Triphenylantimony dicarboxylates (Ph3Sb(O2CR)2, where R=Me, CF3, Ph and CH2NH-Z) readily reacted with amines (R′NH2, where R′=n-C6H13, s-Bu, C6H11, and Ph) to afford corresponding amides and triphenylstibine oxide in fairly good yields. The amidation of RCO2H with R′NH2 was also catalyzed by the orgnoantimony compounds.
Pd-catalyzed C-arylation of unsaturated compounds with pentavalent triarylantimony dicarboxylates
作者:Dmitry V Moiseev、Aleksey V Gushchin、Andrey S Shavirin、Yury A Kursky、Viktor A Dodonov
DOI:10.1016/s0022-328x(02)02179-4
日期:2003.2
Triarylantimony(V) derivatives Ar3SbX2 (X=Hal or acyloxy) were prepared by reaction of Ar3Sb with equimolar amounts of a peroxide ROOH (R=t-Bu, H) in the presence of an acid or an anhydride in good to excellent yields. Ar3Sb(O2CR)2 are mild and efficient C-arylation reagents of unsaturatedcompounds (methyl acrylate, styrene, 2-phenylpropene and acrylonitrile) under palladium catalysis at 50 °C, with
The reaction of triarylantimony diacetates [Ar3Sb(OAc)2] with dialkyl H-phosphites [H-PO(OR)2] in the presence of a Pd(PPh3)4 (5 mol%) catalyst led to the formation of arylphosphonates in moderate to excellent yield under base-free conditions. This reaction is the first example of carbon–phosphorus bond formation by using an organoantimony compound as a pseudo-halide.
Electrochemistry of hypervalent compounds—V. Anodic oxidation of trivalent organoantimony and organobismuth compounds
作者:Toshio Fuchigami、Motoko Miyazaki
DOI:10.1016/s0013-4686(97)85470-9
日期:1997.1
various oxygen nucleophiles or halide ions provided the corresponding hypervalent compounds having SbY bonds (Y = RCOO, F, Cl, Br) in good yields. On the contrary, anodic oxidation of triphenylbismuth gave only carbon-bismuth bond cleavage products. Cathodic reduction of anodically synthesized hypervalent organoantimonycompounds was also investigated by cyclic voltammetry.
Thermodynamic properties of triphenylantimony dibenzoate
作者:A. V. Markin、N. N. Smirnova、D. V. Lyakaev、M. N. Klimova、V. V. Sharutin、O. K. Sharutina
DOI:10.1134/s0036024416100204
日期:2016.10
The temperature dependence of the heat capacity of triphenylantimony dibenzoate Ph3Sb(OC(O)Ph)2 is studied in the range of 6–480 K by means of precision adiabatic vacuum calorimetry and differential scanning calorimetry. The melting of the compound is observed in this temperature range, and its standard thermodynamic characteristics are identified and analyzed. Ph3Sb(OC(O)Ph)2 is obtained in a metastable