5827-57-6Relevant articles and documents
RECYCLING OF ORGANOTIN COMPOUNDS
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Page/Page column 29; 37, (2013/12/03)
A method for the synthesis of a first organic molecule, said method comprising the steps of: a) Reacting a first reactant with an organotin reactant having at least one optionally substituted organic group having from 5 to 20 carbon atoms selected from alkyl, alkenyl, alkynyl, alkoxyalkyl, alkoxy, alkylthioalkyl, carboxylates and alkylaminoalkyl groups, thereby forming a mixture of a product and a tin-containing by-product, and b) Removing most of the tin-containing by-product from said mixture in such a way as to provide a purified product comprising less than 1000 ppm of remaining tin-containing by- product, wherein said step of removing most of said tin-containing by-product is either an extraction between a first liquid and a second liquid, said second liquid being more polar than said first liquid and at least partly immiscible therewith or is a reversed phase chromatography.
Process for the preparation of mono- and dialkyltin halogen compounds and use thereof
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Page/Page column 4-5, (2008/06/13)
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.