FIELD: chemistry.
SUBSTANCE: invention concerns chemical technology of organic silicon compounds. Invention claims new polyarylsilane monodendrons and method of their obtainment. Monodendrons have general formula (I) , where R1 is a substitute from: linear or forked C1-C20 alkyl groups; linear or forked C1-C20 alkyl groups separated by at least one oxygen atom; linear or forked C1-C20 alkyl groups separated by at least one sulphur atom; forked C3-C20 alkyl groups separated by at least one silicon atom; C2-C20 alkenyl groups; Ar is arylene radicals, equal or different independently for each n and m and selected out of: substituted or non-substituted thienyl-2,5-diyl of general formula (II-a)
, substituted or non-substituted phenyl-1,4-diyl of general formula (II-b)
, substituted or non-substituted 1,3-oxazol-2,5-diyl of general formula (II-c)
, substituted fluorene-4,4'-diyl of general formula (II-d)
, where R2, R3, R4, R5, R6 are independently H or substitute out of range indicated for R1; R7 is substitute out of range indicated for R1; L is 1 or 3 or 7 or 15; m is integer from 2 to 6, n is integer from 1 to 6. Method of obtaining dendrimers involves reaction of compounds of general formula (III),
, where X, R1, Ar, L, n and m are as defined above, with lithiation agent of general formula R8Li, where R8 is linear or forked C1-C10 alkyl or dialkylamide of phenyl group; further interaction of obtained compound with functional compound selected out of compound range of formula X-ArnMeSiY2, where Y is Cl or Br or -OCH3 or -OC2H5 or -OC3H7 or -OC4H9. Claimed monodendrons can be applied as source substance in polyarylsilane dendrimer synthesis. Method of obtaining monodendrons is highly processable and does not require expensive catalysts.
EFFECT: synthesis of new polyarylsilane monodendrons, including ones of large generations.
25 cl, 13 dwg, 13 ex
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Authors
Dates
2009-03-10—Published
2007-12-28—Filed