Dendritic p-t-butylcalix arene amide derivatives with terminal amino groups of the first and second generations were synthesized from the ammonolysis of ethyl calixylacetate with 1, 6-diaminohexane and Michael addition of methyl acrylate. Their structures were confirmed by IR, 1H NMR.

通過(guò)擴(kuò)散法骚逼人人操人人玩，采用氨基對(duì)丙烯酸甲酯的Michael加成反應(yīng)和酯基的酰胺化反應(yīng)交替進(jìn)行，合成了4種樹(shù)枝型對(duì)叔丁基杯芳烴酰胺衍生物(n=6，8)。

In the precence of the base catalyst KF/Al2O3, the one - pot reaction of 2 -hydroxybenzaldehyde or 2 - hydroxynaphthaldehyde with ethyl α- bromoacetate,α-bromoacetophenone , 1,4 - dichloromethylbenzene , 4,4'- dichloromethylbiphenyl and 1,5 -dichloromethylnaphthalene gave the benzofuran compounds in 38-89% yield.

本文報(bào)道用 KF/Al_2O_3作為堿催化劑精品人成视频免费国产，由水楊醛或2-羥基-1-萘醛分別和α-溴代乙酸酯、α-溴代苯乙酮私人玩物一区二区、芐基氯国产网站在线看福利午夜r、4男女自拍视频网站，4'-二氯甲基聯(lián)苯和1特黄毛片A片免费网站，5-二氯甲基萘等進(jìn)行一鍋化縮合反應(yīng)，以38～89％的產(chǎn)率合成了14種芳并呋喃化合物67194熟妇人妻欧美日韩。

A series of azobenzenes with different electron effect substituents were prepared from diazonium salts and benzoguanamine.

將含有不同取代基的芳胺在鹽酸介質(zhì)中進(jìn)行重氮化反應(yīng)超碰91欧美，制得相應(yīng)的重氮鹽，再與苯代三聚氰胺發(fā)生偶合反應(yīng)欧美一级精品影院，最終得到一系列含有不同取代基的偶氮化合物A级黄片小视频免费观看。

There six chapters in this dissertation: the overview on the study of probing for reactive oxygen species, spin-labelled fluorophore as probe for free radicals, Fe -EDTA chelate-induced aromatic hydroxylation of terephthalate as a new method for the evaluation of hydroxyl radical-scavenging ability, study of fluorimetric method for the determination of peroxynitrite, study of spiro-formed rhodamine B hydrazide as a novel fluorescent probe in analytical chemistry, the conclusion and prospect of the present research work.

本論文分六章，包括生物活性氧表征的研究進(jìn)展看中国免费黄色视频A、自旋標(biāo)記熒光探針表征自由基的研究jizzjizz日本高清视频免费、利用Fe-EDTA引發(fā)對(duì)苯二甲酸芳環(huán)羥基化反應(yīng)評(píng)價(jià)抗氧化劑清除羥基自由基能力的研究、熒光法表征過(guò)氧亞硝酸根的研究欧美熟女高潮、螺環(huán)型羅丹明B酰肼化合物作為新型熒光探針的性質(zhì)及應(yīng)用的研究久久美女夫妻性爱真实视频、結(jié)論與展望。

Hybrid materials based on chromophore-containing amines had three peaks in surface photovoltaic spectra and photoconductivity properties.

光電導(dǎo)測(cè)試表明含萘基胺和芳雜環(huán)基胺的雜化材料具有明顯的光電導(dǎo)性能国产色一区二区免费视频。

The introduces binaphthyl bisphenol monomer on side-chain benzene ring of sulfonic group on molecular level, prepares sulfonated poly aryl ether with sulfonic group only on naphthalene ring of side chain, so that ensures chemical stability of main chain with high molecular weight, while having no influence on mechanical property thereof.

本發(fā)明從分子水平出發(fā)欧美国产A片免费久久，將磺酸基在側(cè)鏈苯環(huán)上的聯(lián)萘雙酚單體引入，制備僅在側(cè)鏈苯環(huán)上有磺酸基的磺化聚芳醚乱人伦中文视频在线一区二区三区，從而保證了高分子主鏈的化學(xué)穩(wěn)定性一级片电影网站，且不會(huì)影響其優(yōu)異的物理機(jī)械性能。

Novel sodium 2-2-(alkylaryloxy-alkylamidoethanesulfonates (m+nAr-T, m, n: carbon numbers; Ar: aromatic nucleus; T: taurine) with high purity were synthesized through bromization, esterification, Fries rearrangement, Pd-catalyzed hydrogenation, Williamson reaction, and acylation, et al, using carboxylic acid, phenol and taurine as starting materials. The structures and purities were characterized.

以羧酸国产免费黄色视频一区二区三区、苯酚和抛罨剖悠狄磺夥压劭矗磺酸為原料，通過(guò)溴代反應(yīng)、酯化反應(yīng)av付费在线网站、Fries重排反應(yīng)三男两女毛片、催化氫化反應(yīng)、Williamson反應(yīng)以及催化酰胺化反應(yīng)等過(guò)程一区二区欧美黄色，首次成功合成并表征了系列結(jié)構(gòu)明確的高純度N-豕访镁镁镁茫基牛磺酸鈉(m+nAr-T国产精品免费午夜视频，m2021日本免费在线小视频自拍、n為烷基鏈碳數(shù)，Ar為芳環(huán)黄片WWWWWWWWWW，T表示taurine)轻点嗯…啊视频在线无码。

Generally, these compounds are derived from accessible α–oxoketen dithioacetals and the common methods of preparation involve regioselective sodium borohydride 1,2-reduce of α–oxoketen dithioacetals, 1,2-nucleophilic addition of organomatals such as organomagnesium, organolithium, Reformatsky regent to α–oxoketen dithioacetals, Baylis-Hillman reaction between polarized ketene dithioacetals and aldehydes.

主要方法包括：使用硼氫化鈉1，2-選擇性還原α-羰基二硫縮烯酮美女被cao喷水视频在线观看；利用有機(jī)金屬化合物（如有機(jī)鎂試劑一级女人18毛片免费看，有機(jī)鋰試劑，Reformatsky試劑等）對(duì)α-羰基二硫縮烯酮進(jìn)行191绿色在线视频观看，2-親核加成国产91色综合九九免费；通過(guò)α-羰基二硫縮烯酮與芳醛進(jìn)行Baylis-Hillman反應(yīng)等獲得。

Within carboxylic groups, the coordination properties of carbonyl were studied and tn SEM graphs of picolinic acid, meta-methyl benzoic acid and 2-chloro-benzoic acid systems, a large amount of chains like structures probably caused by crystal growth have been firstly observed.

首次在杯[4]芳烴下沿羥基引進(jìn)親電性的三乙氧基硅基異腈酸丙酯99精品国自产在线视频，并且根據(jù)能量傳遞與匹配的機(jī)理合成了五種新型以改性超分子為功能片段的強(qiáng)鍵型雜化材料真实国产激情在线观看视频免费下载，其中與鋱能量傳遞與發(fā)射情況最為優(yōu)異。

A series of sulfonated poly(arylene thioether phosphine oxide)s with various degrees of sulfonation was prepared by polycondensation of 4,4'-thiobisbenzenethiol with the mixture of sBFPPO and BFPPO at different ratios. The effect of IEC on the properties of the products was studied.

以BFPPO欧美真人啪啪猛烈动态图、sBFPPO和4久久中文字幕人妻丝袜，4'-二巰基二苯硫醚為單體，通過(guò)改變BFPPO/sBFPPO的配比禁止18岁进入的网站，合成了一系列不同磺化度的磺化聚芳硫醚三苯基氧膦欧美α片在线高清视频观看，考察了IEC對(duì)產(chǎn)物性能的影響。