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Rapid Microwave-promoted Base-free Suzuki Coupling Reaction of Sodium Tetraphenylborate with Hypervalent Iodonium Salts in Water 被引量:1
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作者 Jie YAN Zhong Shi ZHOU Min ZHU 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第4期473-476,共4页
The palladium chloride-catalyzed Suzuki coupling reaction of sodium tetraphenylborate with hypervalent iodonium salts was achieved under microwave irradiation in water without base in excellent yield. A convenient and... The palladium chloride-catalyzed Suzuki coupling reaction of sodium tetraphenylborate with hypervalent iodonium salts was achieved under microwave irradiation in water without base in excellent yield. A convenient and rapid method for formation of carbon-carbon bonds was afforded. 展开更多
关键词 Suzuki reaction sodium tetraphenylborate iodonium salt microwave irradiation
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Atom-efficient coupling reaction of aryl bromides with sodium tetraphenylborate catalyzed by reusable Pd/C in water under focused microwave irradiation 被引量:1
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作者 Lin Bai 《Chinese Chemical Letters》 SCIE CAS CSCD 2009年第2期158-160,共3页
A rapid and heterogeneous Pd/C-catalyzed atom-efficient phenylation of aryl bromides by sodium tetraphenylborate takes place under focused microwave irradiation in water. The palladium catalyst can be easily recovered... A rapid and heterogeneous Pd/C-catalyzed atom-efficient phenylation of aryl bromides by sodium tetraphenylborate takes place under focused microwave irradiation in water. The palladium catalyst can be easily recovered and reused. 展开更多
关键词 PD/C Sodium tetraphenylborate WATER Focused microwave irradiation
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Standard Gibbs energies of transfer of rubidium tetraphenylborate from water to straight-chain n-alkanols 被引量:1
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作者 邹立壮 王晓玲 +4 位作者 王风阁 张丕俭 郭相坤 周保学 屈松生 《Chinese Journal of Chemistry》 SCIE CAS CSCD 1998年第4期303-310,共8页
Solubilities of ribidium tetraphenylborate in water, methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol and l-octanol at 288.15, 298.15, 308.15, 318.15, 328.15 K have been determined by spectrophotometry.... Solubilities of ribidium tetraphenylborate in water, methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol and l-octanol at 288.15, 298.15, 308.15, 318.15, 328.15 K have been determined by spectrophotometry. The standard Gibbs energy of transfer of ribidium tetraphenylborate from water to straight-chain n-alkanols and the primary medium effect of rubidium tetraphenylborate from 288.15 to 328.15 K have been calculated. Furthermore, the contribution of microscopic interactions to the standard Gibbs energy of transfer of rubidium tetraphenylborate in calculated and discussed. 展开更多
关键词 Rubidium tetraphenylborate Solubility standard Gibbs energy of transfer primary medium effect
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Synthesis of Flurbiprofen via Suzuki Reaction Catalyzed by Palladium Charcoal in Water 被引量:2
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作者 Gang LU Robert FRANZEN +1 位作者 Xiao Jing YU You Jun XU 《Chinese Chemical Letters》 SCIE CAS CSCD 2006年第4期461-464,共4页
Flurbiprofen 1, an excellent nonsteroidal antiinflammatory drug, was synthesized in 5 steps in 69% overall yield. The key step of constructing the biaryl fragment was successfully achieved via Pd/C-catalyzed Suzuki co... Flurbiprofen 1, an excellent nonsteroidal antiinflammatory drug, was synthesized in 5 steps in 69% overall yield. The key step of constructing the biaryl fragment was successfully achieved via Pd/C-catalyzed Suzuki coupling reaction in water using sodium tetraphenylborate as phenylation reagent. 展开更多
关键词 FLURBIPROFEN Suzuki coupling PD/C sodium tetraphenylborate.
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Understanding fluorine-free electrolytes via small-angle X-ray scattering 被引量:1
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作者 Kun Qian Zhou Yu +4 位作者 Yuzi Liu David J.Gosztola Randall E.Winans Lei Cheng Tao Li 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2022年第7期340-346,I0009,共8页
Fluorine-free electrolytes have attracted great attention because of its low-cost and environmental friendliness. However, so far, little is known about the solution structures of these electrolytes. Here,we compare t... Fluorine-free electrolytes have attracted great attention because of its low-cost and environmental friendliness. However, so far, little is known about the solution structures of these electrolytes. Here,we compare the solvation phenomenon of sodium tetraphenylborate(NaBPh_(4)) salt dissolved in organic solvents of propylene carbonate(PC), 1,2-dimethoxyethane(DME), acetonitrile(ACN) and tetrahydrofuran(THF). Small-angle X-ray scattering(SAXS) reveals a unique two-peak structural feature in this saltconcentrated PC electrolyte, while solutions using other solvents only have one scattering peak.Molecular dynamics(MD) simulations further reveal that there are anion-based clusters in addition to the short-range charge ordering in the concentrated NaBPh4/PC electrolyte. Raman spectroscopy confirms the existence of considerable contact ion pairs(CIPs). This work emphasizes the importance of global and local structural analysis, which will provide valuable clues for understanding the structureperformance relationship of electrolytes. 展开更多
关键词 Fluorine-free electrolytes Sodium-ion batteries Small-angle X-ray scattering Solvation structures Sodium tetraphenylborate
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Standard Gibbs Energies of Transfer for KBPh_4 from Water to Water+PrOH and Water+TBA Mixtures and the Primary Medium Effects
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作者 邹立壮 王晓玲 朱书全 《Journal of China University of Mining and Technology》 2002年第2期126-132,共7页
The standard Gibbs energies of transfer (Δ tr G 0) for potassium tetraphenylborate (KBPh 4) have been studied in the systems of water and water +1 propanol (PrOH) as well as water and water + t butyl alcohol (TBA) at... The standard Gibbs energies of transfer (Δ tr G 0) for potassium tetraphenylborate (KBPh 4) have been studied in the systems of water and water +1 propanol (PrOH) as well as water and water + t butyl alcohol (TBA) at 298.15?K. The results show that -Δ tr G 0 exhibits a complicated changing pattern with the mole fraction of TBA( x (TBA)) or PrOH ( x (PrOH)), and Δ tr G 0 has the a maximum value at x (TBA) = 0.2 or x (PrOH)=0.2. Especially, -Δ tr G 0 of KBPh 4 changes unusually with increasing x (TBA) when x (TBA) < 0.05. The reasons for these changes were analyzed and discussed. 展开更多
关键词 potassium tetraphenylborate standard Gibbs energy of transfer activity coefficient medium effect $$$$
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Thermodynamic Properties of Transfer for Tetraphenylarsonium Tetraphylborate from Water to n-Alkanols
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作者 邹立壮 王晓玲 +3 位作者 朱书全 韦鲁滨 路遥 王金本 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2002年第9期822-828,共7页
bInstitute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China Solubilities of tetraphenylarsonium tetraphenylborate (Ph 4AsB Ph 4) in water, methanol, ethanol, 1 propanol, 1 butanol, 1 pentanol,... bInstitute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China Solubilities of tetraphenylarsonium tetraphenylborate (Ph 4AsB Ph 4) in water, methanol, ethanol, 1 propanol, 1 butanol, 1 pentanol, 1 hexanol and 1 octanol at T =293.2, 298.2, 303.2 and 308.2 K have been determined by spectrophotometry. The standard transfer Gibbs energy ( Δ tr G 0 w→s ) and entropy ( Δ tr S 0 w→s ) of Ph 4AsBPh 4 from water to the n alkanols at temerature from 293.2 K to 308.2 K have been obtained. Furthermore, the contribution of microscopic interaction to the standard Gibbs energy of transfer for Ph 4AsBPh 4 was calculated and discussed. The results show that the effect of hydrophobic interaction of Ph 4AsBPh 4 on its transfer process is the most important factor. According to the thermodynamical principle, the transfer process of Ph 4AsBPh 4 from water to the n alkanols is the entropy dominanted. 展开更多
关键词 tetraphenylarsonium tetraphenylborate n alkanol SOLUBILITY standard transfer thermodynamic property activity coefficient microscopic interaction
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