Palladium-catalyzed homo-coupling of arylboronic acids could proceed smoothly with a commercially available resin functionlised by phosphino or amino group as the ligand in supercritical carbon dioxide thereby offerin...Palladium-catalyzed homo-coupling of arylboronic acids could proceed smoothly with a commercially available resin functionlised by phosphino or amino group as the ligand in supercritical carbon dioxide thereby offering a simple and efficient protocol for the synthesis of symmetrical bi-aryl molecules and their higher homologues.展开更多
The aroylhydrazides were prepared by esterification and hydrazinolysis of corresponding aromatic carboxylic acids.The reaction of aroylhydrazides with CS2/KOH in absolute ethanol gave potassium aroyldithiocarbazates a...The aroylhydrazides were prepared by esterification and hydrazinolysis of corresponding aromatic carboxylic acids.The reaction of aroylhydrazides with CS2/KOH in absolute ethanol gave potassium aroyldithiocarbazates and then hydrazinolysis of potassium aroyldithiocarbazates with hydrazine hydrate afforded 3-aryl-4-amino-5-mercapto-1,2,4-triazoles(1a～1g).New seven compounds of bis[(3-aryl)-s-triazolo[3,4-b]-[1,3,4]thiadiazole derivatives(2a～2g) were synthesized in high yields by cyclization of nonanedioic acid with 3-aryl-4-amino-5-mercapto-1,2,4-triazoles(1a～1g).The structures of 2a～2g were confirmed by elementary analyses,IR,1H NMR,and MS spectra.The preliminary antibacterial tests showed that most of them had good antibacterial activities.展开更多
以对叔丁基苯酚为原料,经一步法制得对叔丁基杯[6]芳烃。通过逆傅克反应、亲核取代反应制得二烷基化杯[6]芳烃。最后通过磺化、亲核取代等反应,合成了下缘含喹啉基长链的新型夹状醚杯[6]芳烃化合物( 2a~ 2c ),其结构经 1 H NMR, 13 C NM...以对叔丁基苯酚为原料,经一步法制得对叔丁基杯[6]芳烃。通过逆傅克反应、亲核取代反应制得二烷基化杯[6]芳烃。最后通过磺化、亲核取代等反应,合成了下缘含喹啉基长链的新型夹状醚杯[6]芳烃化合物( 2a~ 2c ),其结构经 1 H NMR, 13 C NMR和HR-MS(ESI-QTOF)表征。以10.0 mol%杯[6]芳烃化合物( 2b )为相转移催化剂,20.0 mol%KOH为催化剂,THF为溶剂,较高产率和高选择性地合成了一系列( Z )-1,2-二芳硒基烯化合物,其结构经 1 H NMR和NOESY确证。 2b 重复使用6次,催化活性无明显降低。展开更多
A new kind of phosphorus-containing monomer bis（4-（p-fluorobenzoyl）phenyl）phenylphosphine oxide was synthesized first,then a poly（aryl ether ketone） containing phosphorus in the main ring was synthesized,derived...A new kind of phosphorus-containing monomer bis（4-（p-fluorobenzoyl）phenyl）phenylphosphine oxide was synthesized first,then a poly（aryl ether ketone） containing phosphorus in the main ring was synthesized,derived from bis（4-（p-fluorobenzoyl）phenyl）phenylphosphine oxide and bisphenol-S by nucleophilic copolycondensation with the use of sulfolane as solvent.The structure was confirmed by FT-IR,（）31P-NMR and（）1H-NMR.Electrical property,mechanical property,heat-resistance property,combustion-resistance and solubility was also researched to know the influence of the containing of phosphorus.The results showed that the polymer have excellent heat-resistance,the glass transition temperature（Tg） was 235℃.The onset temperature taken at 5% weight loss of the polymer in nitrogen was 463℃.The polymer was soluble in CH2Cl2,CHCl3,Cl2（CH）2Cl2,Cl（CH2）2Cl and strongly polar organic solvents such as（N,N-dimethylformamide）（DMF）,N-methyl2pyrrolidone （NMP） at room temperature.展开更多
A novel triphenylphosphine-contained poly(ether ether ketone ketone) was synthesized from bis[4-(p-fluorobenzoyl)-phenyl]phenylphosphine oxide and hydroquinone by nucleophilic copolycondensation with sulfolane as the ...A novel triphenylphosphine-contained poly(ether ether ketone ketone) was synthesized from bis[4-(p-fluorobenzoyl)-phenyl]phenylphosphine oxide and hydroquinone by nucleophilic copolycondensation with sulfolane as the solvent. The structure was confirmed via FTIR, 31P NMR and 1H NMR. Electrical property, mechanical property, heat-resistance property, flame resistance and solubility were also evaluated. The results show that the polymer has an excellent heat-resistance, the glass transition temperature(Tg) is 212.6 ℃. The 5% mass loss of the polymer in nitrogen atmosphere took place at 476 ℃. The polymer is soluble in many organic solvents, such as CH2Cl2, CHCl3, Cl2(CH)2Cl2, Cl(CH2)2Cl, DMF, and NMP at room temperature, the polymer possesses well film ability, good mechanics property, electrical property, and the LOI is 44 which indicates that it possesses an excellent flame retardancy.展开更多
文摘Palladium-catalyzed homo-coupling of arylboronic acids could proceed smoothly with a commercially available resin functionlised by phosphino or amino group as the ligand in supercritical carbon dioxide thereby offering a simple and efficient protocol for the synthesis of symmetrical bi-aryl molecules and their higher homologues.
文摘The aroylhydrazides were prepared by esterification and hydrazinolysis of corresponding aromatic carboxylic acids.The reaction of aroylhydrazides with CS2/KOH in absolute ethanol gave potassium aroyldithiocarbazates and then hydrazinolysis of potassium aroyldithiocarbazates with hydrazine hydrate afforded 3-aryl-4-amino-5-mercapto-1,2,4-triazoles(1a～1g).New seven compounds of bis[(3-aryl)-s-triazolo[3,4-b]-[1,3,4]thiadiazole derivatives(2a～2g) were synthesized in high yields by cyclization of nonanedioic acid with 3-aryl-4-amino-5-mercapto-1,2,4-triazoles(1a～1g).The structures of 2a～2g were confirmed by elementary analyses,IR,1H NMR,and MS spectra.The preliminary antibacterial tests showed that most of them had good antibacterial activities.
文摘A new kind of phosphorus-containing monomer bis（4-（p-fluorobenzoyl）phenyl）phenylphosphine oxide was synthesized first,then a poly（aryl ether ketone） containing phosphorus in the main ring was synthesized,derived from bis（4-（p-fluorobenzoyl）phenyl）phenylphosphine oxide and bisphenol-S by nucleophilic copolycondensation with the use of sulfolane as solvent.The structure was confirmed by FT-IR,（）31P-NMR and（）1H-NMR.Electrical property,mechanical property,heat-resistance property,combustion-resistance and solubility was also researched to know the influence of the containing of phosphorus.The results showed that the polymer have excellent heat-resistance,the glass transition temperature（Tg） was 235℃.The onset temperature taken at 5% weight loss of the polymer in nitrogen was 463℃.The polymer was soluble in CH2Cl2,CHCl3,Cl2（CH）2Cl2,Cl（CH2）2Cl and strongly polar organic solvents such as（N,N-dimethylformamide）（DMF）,N-methyl2pyrrolidone （NMP） at room temperature.
文摘A novel triphenylphosphine-contained poly(ether ether ketone ketone) was synthesized from bis[4-(p-fluorobenzoyl)-phenyl]phenylphosphine oxide and hydroquinone by nucleophilic copolycondensation with sulfolane as the solvent. The structure was confirmed via FTIR, 31P NMR and 1H NMR. Electrical property, mechanical property, heat-resistance property, flame resistance and solubility were also evaluated. The results show that the polymer has an excellent heat-resistance, the glass transition temperature(Tg) is 212.6 ℃. The 5% mass loss of the polymer in nitrogen atmosphere took place at 476 ℃. The polymer is soluble in many organic solvents, such as CH2Cl2, CHCl3, Cl2(CH)2Cl2, Cl(CH2)2Cl, DMF, and NMP at room temperature, the polymer possesses well film ability, good mechanics property, electrical property, and the LOI is 44 which indicates that it possesses an excellent flame retardancy.
