N-(9,9-二苯基-9H-芴-2-基)-N,9-二苯基-9H-咔唑-2-胺的合成

以邻溴硝基苯为起始原料,经Suzuki偶联反应、Cadogan关环反应、Ullmam反应、Buchwald反应等合成了目标产物N-(9,9-二苯基-9H-芴-2-基)-N,9-二苯基-9H-咔唑-2-胺,其结构经¹H NMR、 ¹³C NMR和HR-MS(ESI)确证,并采用TG-DSC、 UV-Vis对产物的热稳定性能和光学性能进行了研究。      

Ultraviolet-emitting conjugated polymer poly(9,9'-alkyl-3,6-silafluorene) with a wide band gap of 4.0 eV

An ultraviolet-emitting conjugated polymer, poly(9,9'-alkyl-3,6-silafluorene) with a wide band gap of 4.0 eV, has been synthesized and characterized.     

9,9-diphenyl-1,9,10,10a-tetrahydro-2H-phenaleno[1,9-bc]pyrans

Reaction between some naphtho[2,1-b]pyrans and 1,1-diphenylethene affords 9,9-diphenyl-1,9,10,10a-tetrahydro-2H-phenaleno[1,9-bc]pyrans.     

Amino derivatives of 9,9-diorgano-9,10-dihydro-9-sila-3-azaanthracene

Derivatives of 9,9-disubstituted 9,10-dihydro-9-sila-3-azaanthracene (compounds with possible biological activity) were synthesized by means of two methods. 10--Cyanoethyl derivatives were obtained by condensation of dihydrosilaazaanthracenes with acrylonitrole in the presence of Triton B. One of these products was reduced with lithium aluminum hydride to 9,9-dimethyl-10-(-aminopropyl)-9,10-dihydro-9-sila-3-azaanthracene. The second method involves conversion of dihydrosilaazaanthrones (obtained by oxidation of dihydrosilaazaanthracenes) to oximes followed by reduction of the latter with hydrazine hydrate in the presence of Raney nickel to give 10-amino derivatives. The latter were subjected to acylation.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1516–1520, November, 1982.     

Synthesis of poly(arylene ether)s based on 9,9-bis(3,5-diphenyl-4-hydroxyphenyl)fluorene

The synthesis of a novel bisphenol, 9,9-bis(3,5-diphenyl-4-hydroxyphenyl)fluorene, in high yield by the transalkylation of 9,9-bis(4-hydroxyphenyl)fluorene is described. Three poly(arylene ether)s based on this hindered phenol were prepared with molecular weights (M_n) ranging from 34 800 to 51 300 and inherent viscosities ranging from 0.27 to 0.43 dL/g. The polymers have T_g's of 236–262°C and did not lose weight below 350°C, with 10% weight loss recorded above 550°C. They are readily soluble in chlorinated solvents such as methylene chloride, chloroform, and 1,2-dichloroethane at room temperature. Attempts to synthesize an analogous monomer, bis (3,5-diphenyl-4-hydroxyphenyl)diphenylmethane, are described.