154704-56-0Relevant articles and documents
Recycling of organotin compounds
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, (2013/12/02)
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 organic group having from 5 to 20 carbon atoms selected from alkyl, 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 being an alkane or a mixture of alkanes having from 5 to 17 carbon atoms and a second liquid more polar than said first liquid or is a reversed phase chromatography.
RECYCLING OF ORGANOTIN COMPOUNDS
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Page/Page column 52, (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.
CRYSTAL AND PROCESS FOR PRODUCING THE SAME
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Page 19, (2010/02/06)
A process for producing crystals of 2-ethoxy-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]-1H-benzimdazole-7-carboxylic acid (compound (I)), characterized by dissolving or suspending the compound (I) or a salt thereof in a solvent comprising an aprotic polar solvent and crystallizing it. By the process, the contaminants which are contained in the compound (I) or its salt and are difficult to remove, such as tin compounds, analogues of the compound (I), and a residual organic solvent, can be easily removed. Crystals of the compound (I) can be efficiently and easily mass-produced in high yield on an industrial scale.
Tri-higher alkyl tin azide and its use
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, (2008/06/13)
Disclosed are a compound of the formula (R)3 SnN3, wherein R is a C7-18 alkyl, and a process for producing a tetrazolylbenzene compound which comprises reacting a cyanobenzene compound with a (R)3 SnN3. This process is useful for a safe and commercially profitable production of the tetrazolylbenzene compound which is employed for producing a tetrazole derivative having a hypotensive action based on angiotensin II-antagonizing activity or a production intermediate thereof.