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Friedel-Crafts烷基化反应研究进展
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作者 程诗砚 阮永红 +1 位作者 龚磊 林玉妹 《大学化学》 CAS 2024年第10期408-415,共8页
Friedel-Crafts烷基化反应是一类重要的有机人名反应,常用于构建碳-碳键,在有机合成及药物化学等领域具有广泛的应用前景。本文介绍了Friedel-Crafts烷基化反应的基本原理,以及近年来利用金属催化、有机小分子催化、可见光催化、酶催化... Friedel-Crafts烷基化反应是一类重要的有机人名反应,常用于构建碳-碳键,在有机合成及药物化学等领域具有广泛的应用前景。本文介绍了Friedel-Crafts烷基化反应的基本原理,以及近年来利用金属催化、有机小分子催化、可见光催化、酶催化和电化学催化等策略所取得的新发展。将本科教学知识与前沿研究有机结合,有利于提高学生的学习兴趣,培养学生思维拓展能力。 展开更多
关键词 friedel-crafts烷基化 有机合成 催化
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Detecting early changes in choroidal vascularity and thickness using optical coherence tomography in patients with corneal crosslinking for keratoconus
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作者 Selim Doganay Mehmet Omer Kiristioglu +1 位作者 Derya Doganay Elif Kacmaz 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第7期1267-1272,共6页
AIM:To investigate changes in choroidal thickness and vascularity in keratoconus patients treated with corneal crosslinking.METHODS:This study evaluated 28 eyes of 22 patients with keratoconus who underwent corneal cr... AIM:To investigate changes in choroidal thickness and vascularity in keratoconus patients treated with corneal crosslinking.METHODS:This study evaluated 28 eyes of 22 patients with keratoconus who underwent corneal crosslinking.The choroidal thicknesses were evaluated on enhanced depth imaging optical coherence tomography at the preoperative and postoperative 3d,1,and 3mo.Choroidal thickness in the four cardinal quadrants and the fovea were evaluated.The choroidal vascularity index was also calculated.RESULTS:There was no significant difference in central choroidal thickness between the preoperative and postoperative 3d,1mo(P>0.05).There was a significant increase in the 3mo(P=0.034)and a significant decrease in the horizontal choroidal vascularity index on the postoperative 3d(P=0.014),there was no statistically significant change in vertical axes and other visits in horizontal sections(P>0.05).CONCLUSION:This study sheds light on choroidal changes in postoperative corneal crosslinking for keratoconus.While it suggests the procedure’s relative safety for submacular choroid,more extensive research is necessary to confirm these findings and their clinical significance. 展开更多
关键词 KERATOCONUS corneal crosslinking choroidal vascularity index enhanced depth imaging optical coherence tomography
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Stromal lenticule addition keratoplasty with corneal crosslinking for corneal ectasia secondary to FS-LASIK:a case series
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作者 Li-Xiang Wang Ying-Ping Deng +5 位作者 Meng-Zhen Xie Ke Ma Hong-Bo Yin Qiong Wang Rui Gong Jing Tang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第3期596-602,共7页
●AIM:To explore the clinical efficacy and safety of stromal lenticule addition keratoplasty(SLAK)with corneal crosslinking(CXL)on patients with corneal ectasia secondary to femtosecond laser-assisted in situ keratomi... ●AIM:To explore the clinical efficacy and safety of stromal lenticule addition keratoplasty(SLAK)with corneal crosslinking(CXL)on patients with corneal ectasia secondary to femtosecond laser-assisted in situ keratomileusis(FS-LASIK).●METHODS:A series of 5 patients undertaking SLAK with CXL for the treatment of corneal ectasia secondary to FS-LASIK were followed for 4-9mo.The lenticules were collected from patients undertaking small incision lenticule extraction(SMILE)for the correction of myopia.Adding a stromal lenticule was aimed at improving the corneal thickness for the safe application of crosslinking and compensating for the thin cornea to improve its mechanical strength.●RESULTS:All surgeries were conducted successfully with no significant complications.Their best corrected visual acuity(BCVA)ranged from 0.05 to 0.8-2 before surgery.The pre-operational total corneal thickness ranged from 345-404μm and maximum keratometry(Kmax)ranged from 50.8 to 86.3.After the combination surgery,both the corneal keratometry(range 55.9 to 92.8)and total corneal thickness(range 413-482μm)significantly increased.Four out of 5 patients had improvement of corneal biomechanical parameters(reflected by stiffness parameter A1 in Corvis ST).However,3 patients showed decreased BCVA after surgery due to the development of irregular astigmatism and transient haze.Despite the onset of corneal edema right after SLAK,the corneal topography and thickness generally stabilized after 3mo.●CONCLUSION:SLAK with CXL is a potentially beneficial and safe therapy for advanced corneal ectasia.Future work needs to address the poor predictability of corneal refractometry and compare the outcomes of different surgical modes. 展开更多
关键词 corneal ectasia femtosecond laserassisted in situ keratomileusis stromal lenticule addition keratoplasty corneal crosslinking corneal thickness corneal biomechanics
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有机催化吲哚的不对称Friedel-Crafts烷基化反应研究进展
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作者 曾宣云 《广东化工》 CAS 2024年第5期52-56,29,共6页
功能化吲哚在许多研究领域有广泛的应用,因此旋光性吲哚衍生物的合成在有机合成中有重要的意义。催化不对称Friedel-Crafts烷基化是研究吲哚区域选择性功能化最直接、最彻底的方法。本文综述了近二十年来有机催化剂催化吲哚的不对称Frie... 功能化吲哚在许多研究领域有广泛的应用,因此旋光性吲哚衍生物的合成在有机合成中有重要的意义。催化不对称Friedel-Crafts烷基化是研究吲哚区域选择性功能化最直接、最彻底的方法。本文综述了近二十年来有机催化剂催化吲哚的不对称Friedel-Crafts烷基化反应的进展,并对此作出总结与展望。 展开更多
关键词 不对称催化 有机催化剂 吲哚 friedel-crafts烷基化
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布洛芬生产工艺中Friedel-Crafts酰化反应的无溶剂连续流工艺设计
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作者 张田 《山东化工》 CAS 2024年第15期223-226,共4页
针对传统布洛芬生产工艺过程的Friedel-Crafts酰化反应中存在工艺复杂、能耗大、环境压力大的问题,本研究将无溶剂连续流合成技术应用于2-氯丙酰氯与异丁基苯的Friedel-Crafts酰化反应,设计了一个无溶剂连续流反应体系,通过考察停留时... 针对传统布洛芬生产工艺过程的Friedel-Crafts酰化反应中存在工艺复杂、能耗大、环境压力大的问题,本研究将无溶剂连续流合成技术应用于2-氯丙酰氯与异丁基苯的Friedel-Crafts酰化反应,设计了一个无溶剂连续流反应体系,通过考察停留时间、温度、总流量和物质的量比等因素,优化工艺并获得最佳的生产条件,安全有效地实现了高腐蚀性汽液混合物的连续流合成反应中高质量芳基酮的制备,异丁基苯的转化率和芳基酮的纯度可达99%左右。本研究为药物合成领域的连续流合成工艺与相关Friedel-Crafts酰化反应的同系列研究提供参考依据。 展开更多
关键词 friedel-crafts酰化反应 无溶剂连续流反应 优化工艺 转化率
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Carcinoma-associated fibroblast-derived lysyl oxidase-rich extracellular vesicles mediate collagen crosslinking and promote epithelial-mesenchymal transition via p-FAK/ p-paxillin/YAP signaling 被引量:2
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作者 Xue Liu Jiao Li +7 位作者 Xuesong Yang Xiaojie Li Jing Kong Dongyuan Qi Fuyin Zhang Bo Sun Yuehua Liu Tingjiao Liu 《International Journal of Oral Science》 SCIE CAS CSCD 2023年第3期422-436,共15页
Carcinoma-associated fibroblasts(CAFs)are the main cellular components of the tumor microenvironment and promote cancer progression by modifying the extracellular matrix(ECM).The tumor-associated ECM is characterized ... Carcinoma-associated fibroblasts(CAFs)are the main cellular components of the tumor microenvironment and promote cancer progression by modifying the extracellular matrix(ECM).The tumor-associated ECM is characterized by collagen crosslinking catalyzed by lysyl oxidase(LOX).Small extracellular vesicles(sEVs)mediate cell-cell communication.However,the interactions between sEVs and the ECM remain unclear.Here,we demonstrated that sEVs released from oral squamous cell carcinoma(OSCC)-derived CAFs induce collagen crosslinking,thereby promoting epithelial-mesenchymal transition(EMT).CAF sEVs preferably bound to the ECM rather than being taken up by fibroblasts and induced collagen crosslinking,and a LOX inhibitor or blocking antibody suppressed this effect.Active LOX(αLOX),but not the LOX precursor,was enriched in CAF sEVs and interacted with periostin,fibronectin,and bone morphogenetic protein-1 on the surface of sEVs.CAF sEV-associated integrinα2β1 mediated the binding of CAF sEVs to collagen I,and blocking integrinα2β1 inhibited collagen crosslinking by interfering with CAF sEV binding to collagen I.CAF sEV-induced collagen crosslinking promoted the EMT of OSCC through FAK/paxillin/YAP pathway.Taken together,these findings reveal a novel role of CAF sEVs in tumor ECM remodeling,suggesting a critical mechanism for CAF-induced EMT of cancer cells. 展开更多
关键词 Carcinoma inhibited crosslinking
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Evaluation of different crosslinking methods in altering the properties of extrusion-printed chitosan-basedmulti-material hydrogel composites 被引量:2
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作者 Suihong Liu Haiguang Zhang +4 位作者 Tilman Ahlfeld David Kilian Yakui Liu Michael Gelinsky Qingxi Hu 《Bio-Design and Manufacturing》 SCIE EI CAS CSCD 2023年第2期150-173,共24页
Three-dimensional printing technologies exhibit tremendous potential in the advancing fields of tissue engineering and regenerative medicine due to the precise spatial control over depositing the biomaterial.Despite t... Three-dimensional printing technologies exhibit tremendous potential in the advancing fields of tissue engineering and regenerative medicine due to the precise spatial control over depositing the biomaterial.Despite their widespread utilization and numerous advantages,the development of suitable novel biomaterials for extrusion-based 3D printing of scaffolds that support cell attachment,proliferation,and vascularization remains a challenge.Multi-material composite hydrogels present incredible potential in this field.Thus,in this work,a multi-material composite hydrogel with a promising formulation of chitosan/gelatin functionalized with egg white was developed,which provides good printability and shape fidelity.In addition,a series of comparative analyses of different crosslinking agents and processes based on tripolyphosphate(TPP),genipin(GP),and glutaraldehyde(GTA)were investigated and compared to select the ideal crosslinking strategy to enhance the physicochemical and biological properties of the fabricated scaffolds.All of the results indicate that the composite hydrogel and the resulting scaffolds utilizing TPP crosslinking have great potential in tissue engineering,especially for supporting neo-vessel growth into the scaffold and promoting angiogenesis within engineered tissues. 展开更多
关键词 Multi-material composite hydrogel crosslinking mechanism CHITOSAN GELATIN Egg white 3D printing
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Crosslinking Mechanism of Soy Protein-based Adhesives based on Glyoxal and a Compound of Protein Model
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作者 曹龙 LIANG Jiankun +3 位作者 ZHANG Qiaoyan XI Xuedong 吴志刚 雷洪 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2023年第4期942-950,共9页
The crosslinking mechanism of glyoxal and asparagine was analyzed,and the relationship between the mechanism and practical performances of soy protein-based adhesives was also discussed.It is shown that when pH=1 and ... The crosslinking mechanism of glyoxal and asparagine was analyzed,and the relationship between the mechanism and practical performances of soy protein-based adhesives was also discussed.It is shown that when pH=1 and 3,glyoxal reacted with asparagine in the form of major cyclic ether compounds.When pH=5,glyoxal reacted with asparagine in two structural forms of sodium glycollate and cyclic ether compounds.However,amidogens of asparagine were easy to develop protonation under acid conditions.Supplemented by the instability of cyclic ether compounds,the reaction activity and reaction degree between glyoxal and asparagine were relatively small.Under alkaline conditions,glyoxal mainly reacted with asparagine in the form of sodium glycollate.With the increase of pH,the polycondensation was more sufficient and the produced polycondensation products were more stable.The reaction mechanism between glyoxal and asparagine had strong correspondence to the practical performances of the adhesives.Glyoxal solution could develop crosslinking reactions with soy protein under both acid and alkaline conditions.Bonding strength and water resistance of the prepared soy protein-based adhesives were increased significantly.When pH>7,glyoxal had relatively high reaction activity and reaction intensity with soy protein,and the prepared adhesives had high crosslinking density and cohesion strength,showing relatively high bonding strength,water resistance and thermal stability. 展开更多
关键词 soy protein wood adhesives GLYOXAL model compounds crosslinking
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Novel polyimide binder for achieving high-rate capability and long-term cycling stability of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2) cathode via constructing polar and micro-branched crosslinking network structure
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作者 Yueming Xu Yali Wang +5 位作者 Nanxi Dong Chuanzhi Pu Bingxue Liu Guofeng Tian Shengli Qi Dezhen Wu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第1期19-31,I0002,共14页
LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)material,as the promising cathode candidate for next-generation highenergy lithium-ion batteries,has gained considerable attention for extremely high theoretical capacity and low... LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)(NCM811)material,as the promising cathode candidate for next-generation highenergy lithium-ion batteries,has gained considerable attention for extremely high theoretical capacity and low cost.Nevertheless,the intrinsic drawbacks of NCM811 such as unstable structure and inevitable interface side reaction result in severe capacity decay and thermal runaway.Herein,a novel polyimide(denoted as PI-Om DT)constructed with the highly polar and micro-branched crosslinking network is reported as a binder material for NCM811 cathode.The micro-branched crosslinking network is achieved by using 1,3,5-Tris(4-aminophenoxy)benzene(TAPOB)as a crosslinker via condensation reaction,which endows excellent mechanical properties and large free volume.Meanwhile,the massive polar carboxyl(-COOH)groups provide strong adhesion sites to active NCM811 particles.These functions of PIOm DT binder collaboratively benefit to forming the mechanically robust and homogeneous coating layer with rapid Li+diffusion on the surface of NCM811,significantly stabilizing the cathode structure,suppressing the detrimental interface side reaction and guaranteeing the shorter ion-diffusion and electron-transfer paths,consequently enhancing electrochemical performance.As compared to the NCM811 with PVDF binder,the NCM811 using PI-Om DT binder delivers a superior high-rate capacity(121.07 vs.145.38 m Ah g^(-1))at 5 C rate and maintains a higher capacity retention(80.38%vs.91.6%)after100 cycles at 2.5–4.3 V.Particularly,at the high-voltage conditions up to 4.5 and 4.7 V,the NCM811 with PI-Om DT binder still maintains the remarkable capacity retention of 88.86%and 72.5%after 100 cycles,respectively,paving the way for addressing the high-voltage operating stability of the NCM811 cathode.Moreover,the full-charged NCM811 cathode with PI-Om DT binder exhibits a significantly enhanced thermal stability,improving the safety performance of batteries.This work opens a new avenue for developing high-energy NCM811 based lithium-ion batteries with long cycle-life and superior safety performance using a novel and effective binder. 展开更多
关键词 POLYIMIDE BINDER Micro-branched crosslinking network NCM811 cathode Lithium-ion battery
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酸性离子液体催化Friedel-Crafts烷基化反应研究进展
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作者 范育鹏 吴芹 黎汉生 《现代化工》 CAS CSCD 北大核心 2023年第11期30-35,共6页
介绍了Friedel-Crafts烷基化反应的催化反应机理,综述了Lewis酸性离子液体、Bronsted酸性离子液体、Bronsted-Lewis双酸性离子液体的结构特性及其在催化Friedel-Crafts烷基化反应中的应用研究进展,并对未来发展方向进行了总结和展望。
关键词 离子液体 催化剂 Lewis酸性 Bronsted酸性 Bronsted-Lewis双酸性 friedel-crafts烷基化反应
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Friedel-Crafts烷基化反应就地增容WPS/OBC合金研究
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作者 何松迪 黎官羽 +2 位作者 陈佳敏 缪培峰 徐建平 《现代塑料加工应用》 CAS 2023年第6期5-9,共5页
采用不同种类的回收废旧聚苯乙烯(PS)与乙烯辛烯嵌段共聚物(OBC)进行Friedel-Crafts烷基化反应,考察了催化剂无水AlCl_(3)用量对废旧PS接枝率和共混物结构、性能的影响。结果表明:由于杂质的存在,回收造粒的发泡PS废旧制件(WEPS)不能与... 采用不同种类的回收废旧聚苯乙烯(PS)与乙烯辛烯嵌段共聚物(OBC)进行Friedel-Crafts烷基化反应,考察了催化剂无水AlCl_(3)用量对废旧PS接枝率和共混物结构、性能的影响。结果表明:由于杂质的存在,回收造粒的发泡PS废旧制件(WEPS)不能与OBC直接进行Friedel-Crafts烷基化反应;而回收造粒的非发泡PS废旧制件(WPS)可以与OBC进行Friedel-Crafts烷基化反应,生成OBC-g-WPS接枝物;当反应温度为140℃,WPS、OBC、无水AlCl_(3)质量比为50.0/50.0/0.4时,WPS接枝率达到了23.5%,与WPS/OBC简单共混物相比,WPS/OBC/无水AlCl_(3)共混物拉伸强度和断裂伸长率分别增加了125.4%和2913.5%;WPS/OBC/无水AlCl_(3)共混物中OBC的熔点和结晶温度均降低,OBC和WPS两相的相容性得到明显提高;以WPS/OBC/无水AlCl_(3)(质量比50.0/50.0/0.4)共混物为增容母料增韧WEPS,制备了WEPS/增容母料(质量比40.0/60.0)共混物,其冲击强度比纯WEPS提高了1044.4%,比WEPS/OBC共混物提高了415.0%。 展开更多
关键词 废旧聚苯乙烯 乙烯辛烯嵌段共聚物 friedel-crafts烷基化反应
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沸石分子筛在Friedel-Crafts酰基化反应中的应用 被引量:22
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作者 袁冰 乔卫红 +2 位作者 李宗石 王桂茹 程侣柏 《化学进展》 SCIE CAS CSCD 北大核心 2005年第4期686-691,共6页
本文综述了沸石分子筛在FriedelCrafts酰基化反应中应用的研究概况,总结了不同类型芳环底物的酰化反应研究成果。Hβ沸石是芳环FriedelCrafts酰基化反应的优良催化剂,研究惰性和轻度活化芳环的沸石分子筛催化酰化有十分重要的意义。
关键词 沸石 friedel-crafts酰基化反应 芳酮
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离子液体在Friedel-Crafts反应中的应用进展 被引量:11
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作者 郝苏霞 王桂荣 +2 位作者 栾艳勤 赵新强 王延吉 《化工进展》 EI CAS CSCD 北大核心 2009年第6期953-957,共5页
对Friedel-Crafts反应和离子液体作了简要介绍,并重点介绍了离子液体在Friedel-Crafts酰基化及烷基化反应中的应用。在Friedel-Crafts反应中,离子液体既可以作为催化剂,也可以作为溶剂,具有其它催化剂或溶剂不可替代的优点。同时简要分... 对Friedel-Crafts反应和离子液体作了简要介绍,并重点介绍了离子液体在Friedel-Crafts酰基化及烷基化反应中的应用。在Friedel-Crafts反应中,离子液体既可以作为催化剂,也可以作为溶剂,具有其它催化剂或溶剂不可替代的优点。同时简要分析了离子液体应用所面临的问题并展望了其未来发展趋势。 展开更多
关键词 friedel-crafts反应 离子液体 催化剂 溶剂
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一锅法合成介孔材料Fe-SBA-15及其对Friedel-Crafts苄基化反应的催化性能 被引量:23
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作者 刘森 杜耘辰 +3 位作者 肖霓 张永来 纪妍妍 肖丰收 《催化学报》 SCIE EI CAS CSCD 北大核心 2008年第5期468-472,共5页
采用尿素作为pH值自调节剂,一锅法合成了Fe-SBA-15催化剂.X射线衍射和N2吸附-脱附等温线结果表明,Fe-SBA-15具有与SBA-15相似的介孔结构.紫外-可见光谱结果表明,Fe-SBA-15样品在550℃焙烧后Fe元素主要以四配位形式存在.活性测试结果表明... 采用尿素作为pH值自调节剂,一锅法合成了Fe-SBA-15催化剂.X射线衍射和N2吸附-脱附等温线结果表明,Fe-SBA-15具有与SBA-15相似的介孔结构.紫外-可见光谱结果表明,Fe-SBA-15样品在550℃焙烧后Fe元素主要以四配位形式存在.活性测试结果表明,Fe-SBA-15对苯及其衍生物的Friedel-Crafts苄基化反应具有优异的催化性能.例如,在反应温度为70℃和苯/苄基氯摩尔比为14.4的条件下,催化剂上苄基氯完全转化所需的时间为20~70min,二苯甲烷的选择性为97.8%~100%.随着反应温度的升高和Fe含量的增加,苄基氯的转化率逐渐升高;随着苯/苄基氯比的减小,苄基氯完全转化所需的时间逐渐延长. 展开更多
关键词 一锅法合成 尿素 SBA-15 介孔分子筛 friedel-crafts反应 苄基氯
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FeCl_3催化羰基化合物与芳烃的还原Friedel-Crafts烷基化反应 被引量:8
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作者 李志芳 杨成军 +2 位作者 郑红芳 邱化玉 来国桥 《有机化学》 SCIE CAS CSCD 北大核心 2009年第3期403-408,共6页
在二甲基氯硅烷作用下,FeCl3能催化羰基化合物(醛、酮)与芳烃及噻酚的还原Friedel-Crafts烷基化反应,在温和的条件下一步实现羰基化合物的还原和C—C键的构造.
关键词 三氯化铁 羰基化合物 friedel-crafts烷基化
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Friedel-Crafts反应制备乙酰化聚苯乙烯型载体 被引量:8
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作者 卞国建 魏荣卿 +2 位作者 刘晓宁 王强 欧阳平凯 《过程工程学报》 EI CAS CSCD 北大核心 2005年第1期44-48,共5页
通过Friedel-Crafts酰基化反应制备了功能化乙酰基聚苯乙烯(PS)载体.该载体经Mannich反应胺化后可替代氯甲基树脂制备的胺基树脂用作酶的固定化载体及制备离子交换树脂.此法避免了氯甲基树脂生产中使用氯甲醚等致癌物质及多取代、二次... 通过Friedel-Crafts酰基化反应制备了功能化乙酰基聚苯乙烯(PS)载体.该载体经Mannich反应胺化后可替代氯甲基树脂制备的胺基树脂用作酶的固定化载体及制备离子交换树脂.此法避免了氯甲基树脂生产中使用氯甲醚等致癌物质及多取代、二次交联等副反应的问题.考察了反应时间、催化剂和酰基化试剂用量、溶剂体系及溶剂用量等对PS乙酰化反应的影响,优化了反应条件,制得乙酰基PS最大担载量可达5.9mmol/g,并在此范围内可定量获得预期担载量的乙酰基PS载体. 展开更多
关键词 friedel-crafts 酰基化反应 功能化 乙酰基聚苯乙烯 乙酰基的定量担载
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FeCl_3作用下α-羰基二硫缩烯酮的Friedel-Crafts酰基化反应 被引量:3
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作者 赵辉 于海丰 +5 位作者 李铁纯 杨勇 蒋仕春 乔宗梅 梅迪 张茗昕 《化学研究与应用》 CAS CSCD 北大核心 2016年第4期534-538,共5页
探讨了价廉易得、无毒性和环境友好的FeCl_3作用的烷硫基活化内烯烃α-羰基二硫缩烯酮与酰氯的Friedel-Crafts酰基化反应。在FeCl_3(1 equiv)存在下,CH_2Cl_2介质中,回流条件下,α-羰基二硫缩烯酮能与不同结构的酰氯有效地发生Friedel-C... 探讨了价廉易得、无毒性和环境友好的FeCl_3作用的烷硫基活化内烯烃α-羰基二硫缩烯酮与酰氯的Friedel-Crafts酰基化反应。在FeCl_3(1 equiv)存在下,CH_2Cl_2介质中,回流条件下,α-羰基二硫缩烯酮能与不同结构的酰氯有效地发生Friedel-Crafts酰基化反应,高产率生成α,α-二羰基二硫缩烯酮。 展开更多
关键词 二硫缩烯酮 氯化铁 friedel-crafts酰基化反应
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姜烯衍生物的合成及其与吲哚类化合物的Friedel-Crafts反应 被引量:2
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作者 潘博文 石洋 +3 位作者 刘雄伟 曹煜 王华林 周英 《合成化学》 CAS CSCD 北大核心 2013年第4期400-405,共6页
以芳基甲醛和异丙叉丙酮为原料经羟醛缩合反应合成了姜烯(2a)及其一系列衍生物(2b~2h);2a~2f与吲哚类化合物经Friedel-Crafts反应合成了18个新型的含姜烯骨架和吲哚骨架的拼接衍生物,其结构经1H NMR和13C NMR表征。
关键词 芳姜黄酮 合成 羟醛缩合 friedel-crafts反应
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Friedel-Crafts酰基化反应研究进展 被引量:13
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作者 董先明 胡艾希 +1 位作者 符若文 周宏伟 《合成化学》 CAS CSCD 2001年第6期495-498,共4页
对 Friedel-Crafts酰基化反应的最新研究进展按催化剂的类型分金属氯化物、三氟甲磺酸盐、沸石、金属或非金属等四类进行了综述。参考文献 1
关键词 friedel-crafts 酰基化反应 催化剂 综述 芳酮 合成 金属氯化物 三氟甲磺酸盐 沸石 金属 非金属
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新型功能纤维的Friedel-Crafts交联及磺化反应研究 被引量:1
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作者 张艳丽 李冬光 +1 位作者 原思国 蒋登高 《河南工业大学学报(自然科学版)》 CAS 北大核心 2006年第2期74-76,88,共4页
用氯甲醚作为后交联剂,对聚丙烯接枝苯乙烯二乙烯苯(PP ST DVB)纤维的Friedel-Crafts交联反应进行了研究,制备出具有高比表面积的新型功能纤维.结果表明,PP-ST-DVB纤维经交联反应后,比表面积明显增加,可增大至原纤维150多倍,增加的幅度... 用氯甲醚作为后交联剂,对聚丙烯接枝苯乙烯二乙烯苯(PP ST DVB)纤维的Friedel-Crafts交联反应进行了研究,制备出具有高比表面积的新型功能纤维.结果表明,PP-ST-DVB纤维经交联反应后,比表面积明显增加,可增大至原纤维150多倍,增加的幅度与交联反应条件有重要关系.对交联纤维进一步磺化,结果显示,经Friedel-Crafts交联反应制得的新型功能纤维磺化反应速度较原纤维有显著提高,反应条件更为温和. 展开更多
关键词 聚丙烯接枝苯乙烯-二乙烯苯(PP-ST-DVB)纤维 氯甲醚 friedel-crafts交联 比表面积 磺化反应
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