3-肉桂酰基酚酮5位单溴代产物的合成研究

研究了３－肉桂酰基酚酮的５位单溴代产物的合成。设计路线为：以２－肉桂酰基－７－甲氨基酮（１）为起始原料,首先进行溴化得到４－溴－２肉桂酰基－７－甲氨基酮（２）;化合物２在氢氧化钠碱性溶液中水解得到目标物５－溴－３－肉桂酰基酚酮（３）。化合物２、３为尚未见文献报道的新化合物,它们的结构经物理性质的测定、光谱数据和元素分析得到证实。     

5-氟-2-溴苯甲酸的制备实验研究

以乙酸为溶剂 ,乙酸钴、乙酸锰、溴化钠为催化剂 ,由氧气在常压下氧化 5 -氟 - 2 -溴甲苯制备 5 -氟 - 2 -溴苯甲酸 ,反应温度 12 0～ 130℃ ,反应物质量分数为 16 .8%～ 2 0 .2 % ,催化剂用量为原料的 2 .5 %～ 4 %时 ,收率较高     

2—溴—4,6—双（氯甲基）间二甲苯及其衍生物的合成

研究了２－溴间二甲苯五氯甲基甲醚的反应,发现了一种合成２－溴－４,６－双间二甲苯的新方法、同时对其衍生物合成方法进行了探讨。     

Influence of acetated‐based and bromo‐based ionic liquids treatment on wool dyeing with acid blue 7

Bromo‐based and acetated‐based ionic liquids (ILs), 1‐butyle‐3‐methylimidazolium bromo ([Bmim]Br), 1‐ethyl‐3‐mthylimidazolium bromo ([Emim]Br), 1‐butyle‐3‐methylimidazolium acetate ([Bmim]Ac), and 1‐ethyl‐3‐mthylimidazolium acetate ([Emim]Ac), were synthesized and employed for wool surface treatment. Scanning electron microscope results indicated that the wool surfaces treated with acetated‐based ILs were eroded more than those treated with bromo‐based ILs. Comparable studies showed that the wool samples treated with acetate‐based ILs, especially [Emim]Ac, had higher initial dyeing rate and equilibrium exhaustion than those with bromo‐based ILs. Along with treatment temperature and time increasing, acetate‐based ILs had more remarkable effects on mechanical and dyeing properties of the wool samples than bromo‐based ILs. The wool samples treated with [Emim]Ac at 60°C for 10 min had excellent low‐temperature dyeing properties. The color depth (K/S) investigations showed that the wool samples treated with acetate‐based ILs possessed darker color depth than those treated with the bromo‐based ILs. Color fastnesses of the wool samples treated with [Bmim]Br, [Emim]Br and [Bmim]Ac exhibited the same grades as the untreated sample, while wet color fastnesses of [Emim]Ac treated sample were slightly decreased. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012     

4-溴-2-丁烯酸乙酯的研制与应用

以 2 丁烯酸为原料 ,通过酯化和溴代反应研制了药物中间体 4 溴 2 丁烯酸乙酯。经核磁共振图谱检测 ,确认了产品结构 ,得到的 4 溴 2 丁烯酸乙酯的收率是 70 5 % ,质量分数为 92 %。     

2-氟-4-溴甲苯、2-氟-4-溴苄基溴的合成与研究

2-氟-4-溴甲苯(简称BFT)、2-氟-4-溴苄基溴(简称BFBB)是合成医药FK-366的一种重要中间体，本文介绍了BFT和BFBB的合成路线，研究结果表明该路线适用于工业化大生产。     

2-溴-2-硝基-1,3-二丙二醇的合成

以硝基甲烷和四醛为原料,在碱性条件下经烷基羟基化和溴化两步合成2-溴-2-硝基-1,3-二丙二醇,考虑了烷基羟基化反应,溴化反应温度,时间,对产品收率的影响.收率可达78.6%     

4′-溴-6-甲基-8-氰甲基黄酮的全合成

探索黄酮醋酸类化合物的合成方法。通过酰基化、Fries重排、氯甲基化、氰化、缩合及 I2 /DMSO/H2 SO4 关环氧化合成 4′-溴 -6-甲基 -8-氰甲基黄酮 ,获得了满意的收率 (69.5 % )。采用新方法合成了鲜见文献报道的两个新化合物 2′-羟基 -3′-氰甲基 -5′-甲基 -4-溴查耳酮和 4′-溴 -6-甲基 -8-氰甲基黄酮 ,并对各步主要产物进行了结构表征。该方法具有反应时间短、操作简便、收率好等优点。基黄酮     

Covalent functionalization of multi-walled carbon nanotube surfaces by conjugated polyfluorenes

The outer surface of multi-walled carbon nanotubes (MWCNTs) was successfully modified with 7-bromo-9,9-dioctylfluorene-2-carbaldehyde by using 1,3-dipolar cycloaddition of azomethine reaction to introduce bromo functional groups. The peripheral bromo functional groups can be used to further react with AB-type monomers through Suzuki polycondensation to afford the PF-functionalized MWCNTs, which are of a cable-like structure. Through covalent connection to MWCNTs, the fluorescence of polyfluorenes was completely quenched by the MWCNTs, indicating a fast photo-induced electron transfer from polyfluorenes to MWCNTs.     

Improved Synthesis of 3‐Bromo‐2,2‐dimethyl‐propanal,a Versatile Building Block for Compounds with two Geminal Methyl Groups on a Quaternary Center

A literature synthesis of 3‐bromo‐2,2‐dimethyl‐propanal ( 2 ) is reinvestigated since in our hands it gave very unreliable results. The ensuing decomposition reactions are studied (including X‐ray structure of the trimer of 2 : 2,4,6‐tris‐(2‐bromo‐1,1‐dimethyl‐ethyl)‐1,3,5‐trioxane ( 3 )), and a reliable method for the synthesis of 2 based on TEMPO catalyzed oxidation with NaOCl as co‐oxidant is presented.