a-二芳甲基-b-羰基硫代羧酸酯与肼的环合反应：官能化含5-羟基吡唑基的三芳基甲烷类化合物的合成

本文研究了合成官能化含5-羟基吡唑基的三芳基甲烷类化合物的a-二芳甲基-b-羰基硫代羧酸酯与肼的环合反应。研究表明,在乙醇介质中,回流条件下, a-二芳甲基-b-羰基硫代羧酸酯与肼能有效进行环合反应,高产率制得5-羟基吡唑基三芳甲烷类化合物。该反应条件温和,产率高,操作简单。     

三芳基甲烷树脂的合成与表征

芘和苯甲醛，在对甲基苯磺酸作用下，生成了Ｂ阶ＣＯＰＮＡ树脂．用红外光谱、核磁共振氢谱及碳谱对其结构进行了表征．Ｂ阶ＣＯＰＮＡ树脂经在惰性气氛中５００、６００和８００℃的热处理后，得到不溶不熔的ＣＯＰＮＡ树脂．电子自旋共振谱（ＥＳＲ）测试表明，其稳定自由基浓度最高可达２．２８×１０２２ｓｐｉｎｓ／ｇ．     

Magnetic field effect on the dye formation in photoreduction of benzophenone by diphenylamine in micellar solutions

The formation of 4-plienylaminopltenyldiplienylcarbinol and related triarylrnethne dye was observed upon the recombination of keyl and diphenylaminc radicals in surfactant micelles. The negative magnetic effect of the reaction studied reaches 1.8 and is caused by an increase in the escape of the radicals from the cage due to increasing lifetime of triplet radical pairs.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1419–1421, June, 1996.     

钒(Ⅴ)-硫氰酸盐-碱性三芳基甲烷染料的显色反应研究

研究了在表面活性剂存在下,钒(V)与硫氰酸盐和结晶紫、孔雀绿、灿烂绿、甲基紫及维多利亚蓝4R等碱性三芳基甲烷染料形成离子缔合物的显色反应.讨论了钒(V)-硫氰酸盐-结晶紫-阿拉伯树胶体系的反应条件和分析特性。摩尔吸光系数为2.55×10⁵L·mol^-1·cm^-1.此法可用于铝合金中微量钒的测定。     

芘—苯甲醛COPNA树脂的合成及其磁性行为的研究

芘苯甲醛ＣＯＰＮＡ树脂的合成及其磁性行为的研究阮湘泉董奕郑嘉明郭崇涛（天津大学化学工程系，天津３０００７２）关键词三芳基甲烷，ＣＯＰＮＡ树脂，稳定自由基，铁磁性在有机磁体的研究中，Ｏｔａ等人曾研究了以次甲基交联的缩合多核芳香烃（ＣＯＰＮＡ）树脂经光...     

三氯化铁催化合成三芳基甲烷化合物的研究

三甲基芳烷类化合物在染料、生物、医药领域具有的重要应用价值。本文研究了2,4,6-三甲基苯甲醛和N,N-二甲基间溴苯胺通过缩合反应制备三芳基甲烷化合物,考察了催化剂种类、反应溶剂、反应温度和反应时间对产物收率的影响。确定合成条件为以无水Fe Cl3作为催化剂、对二甲苯为溶剂、反应温度为128℃,反应时间为32h,目标产物收率达到80%左右,产物结构经质谱和氢核磁共振谱表征确认。     

The Interaction Between Crystal Violet and Bovine Serum Albumin: Spectroscopic and Molecular Docking Investigations

The present work reported the investigations on the interaction between a triphenylmethane industrial dye—crystal violet (CV)—and bovine serum albumin (BSA) by spectroscopic methods and molecular docking calculation. The static quenching mechanism of the intrinsic fluorescence of BSA by CV was deduced by the fluorescence measurements and the ground-state complex formation was confirmed from the UV-vis spectra. The site maker competition binding experiments together with the molecular docking showed that the CV molecule specifically bound on the subdomain IIA of BSA. The obtained values of thermodynamic properties of binding suggested that the hydrophobic interaction was dominated as suggested by molecular docking results that the CV molecule was surrounded by hydrophobic amino acid residues. The conformation change of BSA in the binding process was detected by circular dichroism spectra and Fourier-transform infrared (FTIR) spectra and also reflected by the size change of BSA from the measurements by dynamic light scattering (DLS).     

〔I2Br〕- 与某些碱性三芳基甲烷染料的水相显色反应及其应用于碘的分光光度测定

研究〔I2Br〕-络阴离子与乙基紫、结晶紫、维多利亚蓝4R等碱性三芳基甲烷染料在聚乙烯醇存在下的离子缔合反应的条件、分光光度特征和分析化学性质。结果表明,在稀磷酸介质中,当形成上述离子缔合络合物时,溶液均发生明显的颜色变化。不同染料体系的摩尔吸光系数在2.6×104～6.2×104L*mol-1*cm-1之间,以乙基紫体系灵敏度最高。碘离子浓度在0～1.6mg/L（乙基紫体系）、0～1.4 mg/L（结晶紫体系）和0～0.8 mg/L(维多利亚蓝体系)符合比耳定律,可用于水相直接显色测定碘离子。方法也有良好的选择性,较大量的其他卤离子、一些无机酸根以及一定量的常见金属离子不干扰。用于海带、紫菜和黄豆中碘离子的测定,结果较为满意。     

Synthesis of Chiral Triarylmethanes Bearing All‐Carbon Quaternary Stereocenters: Catalytic Asymmetric Oxidative Cross‐Coupling of 2,2‐Diarylacetonitriles and (Hetero)arenes

A direct and enantioselective oxidative cross‐coupling of racemic 2,2‐diarylacetonitriles with electron‐rich (hetero)arenes has been described, which allows for efficient construction of triarylmethanes bearing all‐carbon quaternary stereocenters with excellent chemo‐ and enantioselectivity. The reaction has an excellent functional group tolerance, and exhibits a broad scope with respect to both 2,2‐diarylacetonitrile and (hetero)arene components. The rich chemistry of the cyano group allows for facile synthesis of other valuable chiral triarylmethanes bearing all‐carbon quaternary centers that are otherwise difficult to access.