METHOD OF PRODUCING DIALKYLTIN DIALKOXIDES Russian patent published in 2011 - IPC C07F7/22 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a dialkyltin compound, involving: a reaction for redistribution of alkyl groups and/or a reaction for dealkylation of a composition of a deactivated form of a catalyst based on dialkyltin, which is formed during synthesis of an ester derivative using a dialkyltin-based catalyst. The dialkyltin-based catalyst is a compound of at least one type selected from a group comprising a dialkyltin compound of formula (1) and tetraalkyldistanoxane of formula (2): (1) (where each of R¹ and R² independently denote a straight or branched alkyl group containing 1-12 carbon atoms, each of X¹ and X² independently denotes a substitute of at least one type selected from a group comprising an alkoxy group, an acyloxy group and a halogen atom, a and b independently denote an integer from 0 to 2 and a+b=2, and c and d independently denote an integer from 0 to 2 and c+d=2; (2), (where each of R³, R⁴, R⁵ and R⁶ independently denote a straight or branched alkyl group containing 1-12 carbon atoms, each of X³ and X⁴ independently denote a substitute of at least one type selected from a group comprising an alkoxy group, an acyloxy group and a halogen atom, and e, f, g and h independently denote an integer from 0 to 2, e+f=2 and g+h=2). The ester derivative is a compound of at least one type selected from a group comprising a carboxylic ester, a carbamate and isocyanate.

EFFECT: method enables production of versions of dialkyltin alkoxide compounds in active form in form of dialkyltin alkoxide compounds.

37 cl, 34 ex, 7 dwg