METHOD OF OBTAINING BRANCHED OLIGOARYLSYLANES BASED ON PHENYLOXAZOLS Russian patent published in 2017 - IPC C08G77/60 C09K11/06 

FIELD: chemistry.

SUBSTANCE: new method for the preparation of branched oligoarylsilanes based on phenyloxazoles of the general formula (I), where R is H or a substituent from the series: linear or branched C₁-C₂₀ Alkyl groups; Linear or branched C₁-C₂₀ Alkyl groups separated by at least one oxygen atom; Linear or branched C₁-C₂₀ Alkyl groups separated by at least one sulfur atom; Branched C₃-C₂₀ Alkyl groups separated by at least one silicon atom; C₂-C₂₀ Alkenyl groups, Ar is identical or different arylene or heteroarylene radicals selected from the group: substituted or unsubstituted thienyl-2,5-diyl, substituted or unsubstituted phenyl-1,4-diyl, substituted or unsubstituted 1,3-oxazole-2,5-diyl, Oz is substituted or unsubstituted 1,3-oxazole-2,5-diyl, m is an integer from 2 to 3, n is an integer from 1 to 4, which is that the compound of general formula (III), wherein Y is substituted or unsubstituted 1,3-oxazole-2,5-diyl or halogen from the group Cl, Br, I; R, Ar, n, m are as defined above, reacted under the conditions of the direct arylation reaction with a reagent of the general formula (IV) wherein X is halogen from the group Cl, Br, I with the proviso that Y is substituted or unsubstituted 1,3-oxazole-2,5-diyl, or substituted or unsubstituted 1,3-oxazole-2,5-diyl, with the proviso that Y is halogen from the group Cl, Br, I.

EFFECT: simplification of the synthetic scheme, the reduction of the reaction time, the cost reduction by eliminating expensive organolithium and organoboron reagents and energy consumption for new branched oligoarilsilanov based phenyloxazole.

11 cl, 6 dwg, 1 tbl, 27 ex