1461-25-2Relevant articles and documents
Synthesis and characterization of lithiated dendrimers
Meijboom, Reinout,Hutton, Alan T.,Moss, John R.
, p. 1811 - 1815 (2003)
The synthesis of the precursor phenylthiomethyl-functionalized carbosilane dendrimers Si[(CH2)3SiMe2CH2SPh]4 (1) and Si{(CH2)3Si[(CH2)3SiMe2 CH2SPh]3}4 (2) is described. Reacting 1 and 2 with lithium naphthalenide gives the first lithiomethyl-functionalized dendrimers Si[(CH2)3SiMe2CH2Li]4 (7) and Si{(CH2)3Si[(CH2)3 SiMe2CH2Li]3}4 (11). Deutero, trimethylsilyl, trimethylstannyl, and tri-n-butylstannyl derivatives of these dendrimers, as well as a method to enable isolation of the lithiated dendrimers as solids, are described.
Tin-magnesium transmetallation reactions
Yousef, Rushdi I,Rüffer, Tobias,Schmidt, Harry,Steinborn, Dirk
, p. 111 - 114 (2002)
Sulfur-functionalized methyltin compounds nBu3SnCH2S(O)iR (i = 0, 1, 2; R = Me, Ph) underwent transmetallation with Grignard compounds MgR′X (R′ = Me, nBu, Ph; X = Cl, Br, I) and diorganomagnesium compounds MgR′R″ (R′/R″ =
Continuous organomagnesium synthesis of organometallic compounds
Storozhenko,Grachev,Klochkov,Shiryaev
, p. 387 - 393 (2013)
Continuous organomagnesium synthesis of a number of organic derivatives of 14th group elements of the periodic table was examined in a column apparatus with an agitator. An effect of a molar ratio of reactants, temperature in a reaction zone, and other factors was studied on the yield and composition of the products.
CATHODIC SYNTHESIS OF TETRAALKYLTIN COMPOUNDS.
Ulery
, p. 1474 - 1478 (1972)
Methyl bromide and allyl bromide are efficiently reduced at a tin electrode to form tetramethyl and tetraallyl tin. A variety of other bromides with appreciably more negative reduction potentials also produce tetra-substituted tin compounds but the yields are lower. At higher potentials, cathode disintegration is a consequence of the competitive reduction of the carrier electrolyte (Et//4N** plus Br**-).
Mechanism of the reaction of tri-n-butylstannyl anion with n-butyl bromide and iodide as studied by the 119Sn CIDNP technique
Wakasa, Masanobu,Kugita, Tsuyoshi
, p. 2941 - 2943 (1999)
The mechanism of the reaction of the tri-n-butylstannyl anion with n-butyl bromide and iodide in THF was studied by the chemically induced dynamic nuclear polarization (CIDNP) technique. Strong 119Sn CIDNP spectra were observed for the first ti
ELECTROSYNTHESIS OF DIALKYLTIN DERIVATIVES
Ulery
, p. 1493 - 1498 (1973)
Reduction of alkyl halides at a Sn cathode in TEAX/MeCN results in mixed degrees of alkylation of this metal. Primary products include RSn, R//2Sn, and/or reactive polytins containing these units. Final products depend on environment and tend to be complicated mixtures. A direct synthesis with good yields of dibutyltin oxide and dioctyltin oxide results from aerating the catholyte. A mixture of alkyltin halides is formed in an undivided cell by the interaction of anode and cathode products; other products include the tetraethylammonium alkylhalostannates. Factors governing the course of cathodic alkylation are discussed.
The interaction of organotin(IV) acceptors with 1,4-bis(5-hydroxy-1-phenyl-3-methyl-1H-pyrazol-4-yl)butane-1,4-dione
Pettinari, Claudio,Marchetti, Fabio,Pettinari, Riccardo,Cingolani, Augusto,Drozdov, Andrei,Troyanov, Sergei
, p. 188 - 194 (2002)
From the interaction of organotin(IV) halides SnR2Cl2 with 1,4-bis(5-hydroxy-1-phenyl-3-methyl-1H-pyrazol-4-yl)-butane-1,4-dione (Q2QH2) in methanol in the presence of base the complexes [SnR2(Q2Q)] (1: R = isob
Synthetic Route to 1,1′,2,2′-Tetraiodoferrocene That Avoids Isomerization and the Electrochemistry of Some Tetrahaloferrocenes
Butler, Ian R.,Coles, Simon J.,Corsini, Maddalena,De Biani, Fabrizia Fabrizi,Evans, Daniel M.,Horton, Peter N.,Hughes, David D.,Murphy, Patrick J.
, p. 2496 - 2503 (2021)
An efficient synthesis of 1,1′,2,2′-Tetraiodoferrocene is described that uses 1,1′,2,2′-Tetrakis(tri-n-butylstannyl)ferrocene as a key intermediate in its synthesis. In an attempt to examine the stepwise mechanism, the reaction of the tetratin-substituted ferrocene 1,1′,2,2′-Tetrakis(tri-n-butylstannyl)ferrocene with iodine was monitored by 1H NMR and a series of coexisting intermediate compounds such as 1,1′-bis(tri-n-butylstannyl)-2,2′-diodoferrocene were observed. The crystal structure of 1,1′,2,2′-Tetraiodoferrocene has been determined, and it is compared with the structure of the previously reported 1,1′,2,2′-Tetrabromoferrocene and 1,2,4,1′-Tetraiodoferrocene. The comparative electrochemistry of 1,1′,2,2′-Tetrachloroferrocene, 1,1′,2,2′-Tetrabromoferrocene, and 1,1′,2,2′-Tetraiodoferrocene is described. The crystal structure of 1,2,1′-Triiodoferrocene is also reported for comparative use to illustrate the scope of the synthetic method.
Synthesis of 3-stannyl and 3-silyl propargyl phosphanes and the formation of a phosphinoallene
Saunders, Amy J.,Crossley, Ian R.
, p. 2148 - 2155 (2016)
The group 14 chloropropargyls R3ECCCH2Cl (R3E = nBu3Sn, Ph3Sn, Me2PhSi, iPr3Si, nPr3Si, nBu3Si), obtained by a modified literature procedure, react with LiPPh2 to afford the novel propargyl phosphanes Ph2PCH2CCER3 in high yield, as viscous oils; (Me3Si)2PCH2CCSiPhMe2 is similarly obtained from LiP(SiMe3)2. In contrast, the reaction of PhCCCH2MgCl with ClP(NEt2)2 fails to produce a comparable propargyl phosphane, but generates preferentially (>70%) the novel phosphinoallene (Et2N)2PC(Ph)CCH2, which is characterised spectroscopically, and through its reaction with HCl. The coordination chemistry of representative phosphanes is explored with respect to platinum and palladium for the first time.
Triorganotin(IV) derivatives of several 4-acyl-5-pyrazolonato ligands: Synthesis, spectroscopic characterization and behavior in solution crystal structure of aquotrimethyl(4-p-methoxybenzoyl-1-phenyl-3-methyl-pyrazolon-5-ato)tin(IV)
Marchetti, Fabio,Pettinari, Claudio,Cingolani, Augusto,Lobbia, Giancarlo Gioia,Cassetta, Alberto,Barba, Luisa
, p. 141 - 154 (1996)
New triorganotin(IV) derivatives [(Q)SnR3 · x(H2O)] (x = 0, R = Ph; x = 1, R = Me and nBu) (in general QH = 1-R′-3-methyl-4-R″ (C=O)-pyrazol-5-one; in detail Q′H: R′ = C6H5, R″ = C6H5; QAH: R′ = C6H5, R″ = p-CH3O-C6H4; QNH: R′ = C6H5, R″ = p-NO2-C6H4; QBrH: R′ = C6H5, R″ = p-Br-C6H4; Q″ H: R′ = C6H5, R″ = CH3; QClH: R′ = C6H5, R″ = CCl3; QFH: R′ = C6H5, R″ = CF3; QMH: R′ = CH3, R″ = C6H5; QDH: R′ = CH3, R″ = CH3) have been synthesized and characterized by analysis and spectral (IR and 1H, 13C and 119Sn NMR) data. The (Q)SnPh3 derivatives are five-coordinated in the solid state, with a likely skewed cis-trigonal bipyramidal (cis-TBP) geometry around the tin center and the ligand (Q)- acting in the bidentate form. In [(Q)SnR3 · (H2O)] derivatives (R = nBu or Me) a coordination site is occupied by water, with the ligand (Q)- coordinating in a monodentate fashion. The crystal structure of [(QA)SnMe3 · (H2O)] has been determined: the tin atom is found in a distorted TBP environment, with the methyls in the equatorial positions. Two of the Sn-C bond lengths are normal (2.11(1) and 2.08(2) A) whereas the third is longer (2.18(2) A); the ligand binds the metal atom through one carbonyl oxygen in the apical position (Sn-O = 2.10(1) A). The bond length between H2O and Sn is longer (2.41(2) A), and the O-Sn-O angle is 174.9(5)°. H atoms of water are involved in an intermolecular H-bond network with uncoordinated carbonyl and the pyridinic N atom of the ligand. In chloroform solution the [(Q)SnR3 · (H2O)] derivatives (R = Me or nBu) lost the molecule of water and adopt a tetrahedral arrangement. They also give rise to a slow disproportionation, yielding SnR4 and [(Q)2SnR2] derivatives.
