Using benzyl phosphorus and pyridine phosphorus ligands, a series of complexes were synthesized and their structures were also discussed.

使用苯基膦酸以及吡啶膦酸配體合成了一系列鏈狀和層狀配合物，并對它們的結(jié)構(gòu)進行了研究。

A new method for determination of caffeic acid was presented based on cetyl pyridine bromide modified carbon paste electrode.

制作了溴代十六烷基吡啶修飾碳糊電極，研究了咖啡酸在該修飾碳糊電極上的電化學(xué)行為。

The experimental results indicated that the two N-heterocyclic carbene palladium complexes with coordination of pyridine could catalyze the coupling of bromobenze and gave yield of 80%.

結(jié)果表明欧洲日逼电影，這兩個含吡啶配位的N-雜環(huán)卡賓鈀絡(luò)合物，對溴苯與丙二腈的交叉偶聯(lián)插精品人妻，產(chǎn)率可達80％久久精品国产99精品国产2021。

Remedial group is in ammonia of armour of weekly profess to convinced butterfly Ling15mg foundation applies Yinaxipu, every periderm chip in is shot 2 times, every time 25mg; contrasts the MTX of same dose applies group profess to convinced jointly medicine of other change illness , pyridine of sulphanilamide of the nitrogen that be like willow or come fluorine rice is special.

治療組在每周口服甲氨蝶呤15mg基礎(chǔ)上聯(lián)合應(yīng)用依那西普，每周皮下注射2次国产2021三级片，每次25mg黄色网站点击进入影院；對照組口服相同劑量的MTX聯(lián)合應(yīng)用其他改變病情藥，如柳氮磺胺吡啶或來氟米特激情乱小说在线观看。

The process of 2-chloropyridine chlorination synthesis by pyridine and application were introduced.

介紹了吡啶氯化合成2-氯吡啶的方法和應(yīng)用国产黄特级视频A片。

Other than conventional concept, the N→Rh bond, formed by rhodium in the complex and nitrogen at pyridine ring in the ligand, did not break in the course of the carbonylation reaction, but formed into new active species instead, i.e., the ligand and rhodium as a whole participated in the oxidative addition of CH3I and the formation of CH3COI.

配合物中銠與吡啶環(huán)上共軛N形成的N→Rh配鍵，在羰基化反應(yīng)過程中并非通常認為的斷裂而是形成新的活性物種免费黄色视频不用下载在线观看，即配體與銠作為整體參與了CH3I的氧化加成及CH3COI的生成過程99久久久无码。

The results indicate that the weak election-withdrawing group 4-hydroxymethyl in 4-position of pyridine in 4-HMDPA could weaken the fluorescence intensity of the lanthanide complexes. The contradistinctive experimental results show that the fluorescence intensities of these complexes are related to pH value of the aqueous solution and the dipole moment of solvent molecule: in the neutral aqueous solution,the fluorescence intensities of these complexes were strongest,while the less the dipole moment was,the stronger the fluorescence intensity was.

結(jié)果表明，在吡啶4位引入弱吸電子基團4-羥甲基會減弱稀土配合物的熒光強度性色AV免费不卡无码；在水溶液中稀土配合物與溶液的pH值有著密切的關(guān)聯(lián)狂野欧美男人的天堂网站，中性水溶液中熒光強度較大；分子偶極矩較小的溶劑中稀土配合物熒光強度較強国产v在线在线观看视频免费、一。

Employing dealkylation of cumene as the controlling reaction, the authors investigated the poisoning action of pyridine on a silica-alumina catalyst.

本文以異丙基苯的裂化作為控制反應(yīng)最新狼友网址，用動力學(xué)方法考察了硅鋁催化劑為吡啶中毒的情況。

The yields of the reactions in the presence of DCC and DMAP were higher than those in DCC and pyridine.

在DCC/DMAP體系中的反應(yīng)產(chǎn)率大于在DCC/吡啶中的產(chǎn)率A级毛片免费观。

The cis novel bisoxazoline ligands L1-L4 have been synthesized through the treatment of new cis dihydroxy diamide with p-toluenesulfonyl chloride in the presence of catalytic quantity of 4--pyridine, and the cis dihydroxy diamide could be achieved from the condensation of the amino alcohols and cis cyclopropane dicarbonyl chloride prepared via oxidation and halogenation from cis-2,2-dimethyl-3-formylcyclopropanecarboxylate with DCC.

我們以蒈醛酸內(nèi)酯為起始原料人人鲁，經(jīng)過氧化反應(yīng)、酰氯化反應(yīng)得到順式環(huán)丙烷二酰氯羞羞呦呦视频在线免费播放，然后在二環(huán)己基碳二亞胺的催化下與相應(yīng)的氨基醇反應(yīng)合成了順式二羥基酰胺，再用對甲苯磺酰氯將羥基活化久久久久亚洲AV无码专区电影，最后在二甲氨基吡啶的催化下關(guān)環(huán)合成順式雙噁唑啉配體L1～L4欧美喷水网站一级a片。