- Process for the preparation of mono- and dialkyltin halogen compounds and use thereof
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Production of mixtures of monoalkyl tin trichlorides (I) and dialkyl tin dichlorides (II) by reacting tin tetrachloride with an alkyl aluminum compound in the form of an ether donor complex comprises using an amount of ether in excess of that required to form the complex. Independent claims are also included for: (1) mixtures of (I) and (II) produced as above in a yield of at least 90 mole% based on tin tetrachloride; (2) mixtures of (I) and (II) comprising at least 50 mole% (I); (3) mixtures of (I) and (II) comprising up to 5 mole% trialkyl tin chlorides; (4) mixtures of (I) and (II) comprising at least 50 mole% (I), at least 20 mole% (II) and up to 5 mole% trialkyl tin chloride.
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Page/Page column 7
(2008/06/13)
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- A Convient Synthesis of Monooctyltin(IV) Compounds from 1-, 2-, or 3-Octenes
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Zirconocene (n-octyl) chloride, 5-C5H5)2Zr(n-Oct)Cl>, prepared in situ from 1-, 2-, or 3-octene and zirconocene hydrogen chloride, has been found to react smoothly with 0.5 molar equivalents of stannic chloride to give moderate to high yields of n-octyltin(IV) trichloride at room temperature.
- Das, V. G. Kumar,Chee, Ong Ghee
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p. 335 - 338
(2007/10/02)
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- A highly selective synthesis of R2SnX2 (R = alkyl, X = Br, Cl) species directly from tin and alkyl halides
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The reaction : Sn + 2RX -> SnR2X2 (X = Cl, Br) occurs at relatively low temperature (80 - 120 degC) and with selectives as high as 95 - 99percent in the presence of catalytic system fored by a crown ether and potassium iodide.The reaction is favoured by aprotic dipolar solvents such as dimethylformamide; the presence of an alkyl iodide as cocatalyst has a positive effect, the selectivity remaining unchanged.
- Ugo, R.,Chiesa, A.,Fusi, A.
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- THE USE OF ORGANOSODIUM INTERMEDIATES IN THE SYNTHESIS OF ALKYLTIN CHLORIDES
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The synthesis of various RxSnCl4-x compounds (R=butyl, octyl, dodecyl) from reaction between tin(IV) chloride, or a dialkyltin dichloride, and alkylsodium compounds RNa was investigated.Optimum conditions were established and some competing side-reactions identified.
- Owen, David W.,Poller, Robert C.
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p. 173 - 178
(2007/10/02)
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