When anthrone react with aryl aldehyde in the presence of pyridine by using xylene as the solvent,besides 10 arylmethylene anthrone derivatives we found other oxygenated anthrone which have not been reported.

發(fā)現(xiàn)其生成物中除含有目標(biāo)化合物 1 0 -芳香基甲叉基蒽酮外，還含有部分文獻(xiàn)中沒(méi)有報(bào)道的蒽酮氧化物国产毛片盗摄视频，經(jīng)物理方法確定其為蒽醌官网啪啪啪网站。

Assimilatory nitrate reductase is a soluble, multiple center redox enzyme that catalyses the two-electron reduction of nitrate to nitrite using pyridine nucleotide as a electron donor.

植物中的硝酸鹽還原酶(nitrate reductase，NR)作為限速酶欧美超碰视屏，催化硝酸鹽還原為亞硝酸鹽亚洲欧美日韩专区，這一過(guò)程在氮代謝中處于關(guān)鍵地位，對(duì)植物生長(zhǎng)發(fā)育国产精品免费久久久久影院无码、產(chǎn)量形成有重要影響国产使劲cao视频。

In this paper, eleven benzothiazole derivatives such as N, N, N′, N′-tetra (2-benzothiazolyl) methyl-1, 2-ethanediamine,(2-benzothiazolyl) methyloxy benzene, 2,4-dichloro( 2-benzothiazolyl) methyloxy benzene, O-di(2-benzothiazolyl) methyloxybenzene, P-di(2-benzothiazolyl) methyloxy benzene, 3-(2-benzothiazolyl) pyridine were synthesized by means of conventional method or MWI technology and a single crystal of di (2-benzothiazolyl ) methyl ether was obtained.

本文分別用常規(guī)合成法和微波輻射法合成了N，N久久精品久久囯产精品，N′欧美黑逼， N′-四(2-苯并噻唑基)甲基-1，2-乙二胺日韩成人久久久影视网站大全、(2-苯并噻唑基)甲氧基苯人妻影音先锋啪啪av资源网下载、2，4-二氯-(2-苯并噻唑基)甲氧基苯欧美老女人性生活视频、鄰-二(2-苯并噻唑基)甲氧基苯人人干人人射欧美、對(duì)-二(2-苯并噻唑基)甲氧基苯、3-(2-苯并噻唑基)吡啶等11 個(gè)苯并噻唑類(lèi)化合物并得到二(2-苯并噻唑基)甲基醚單晶欧美精品a片在线看。

Six ruthenium benzylidene complexes (60-65) containing pyridine derivative ligandsare prepared and three of them are new.

為此午夜视频又黄又爽，合成了六個(gè)吡啶及其衍生物配位的釕卡賓配合物60-65，其中三個(gè)是新的亚洲三级片免费网站。

Based on studies of RCM reaction of 50 and CM reaction ofacrylonitrile with 1-octene or 1-decene catalyzed by pyridine derivative-coordinatedruthenium benzylidene complexes, it can be concluded that ruthenium benzylidene complexwith the more labile dissociating ligand exhibits the higher initial activity and better catalyticperformance.

吡啶衍生物配位的釕卡賓配合物催化含氰基烯烴50閉環(huán)交互置換反應(yīng)和丙烯腈與1-辛烯一级毛片无码不卡免费、1-癸烯交叉交互置換反應(yīng)表明，催化劑中吡啶衍生物配體越易解離亚洲第一天堂国产第一页，其初活性越高美国性生交XXXXX无码，催化活性越好。

To improve water solubility of betulin, two acyl groups were introduced at C-3 and C-28 hydroxy groups of betulin. 3, 28-di-O-glutaryl-betulin was synthesized with pyridine as solvent and DMAP as catalyst from betulin and glutaryl anhydride.

為了增強(qiáng)樺木醇的親水性免費看黄色网站，對(duì)樺木醇的C-3位91精品国产自产在线观看永久∴、C-28位羥基進(jìn)行修飾，在吡啶作溶劑欧美理论大片清免费观看、二甲基氨基吡啶作催化劑的條件下，與戊二酸酐反應(yīng)合成樺木醇戊二酸酯精品久久洲久久久久。

In the crystal, the tin atoms are five-coordinated in trigonal bipyramidal structure by bridging pyridine N atoms, resulting in the chain organotin compound.

該化合物中心錫原子為五配位三角雙錐構(gòu)型国产精品ⅴa无码一区二区，并且通過(guò)4-吡啶甲酸配體的氮原子橋聯(lián)作用形成一維無(wú)限鏈狀結(jié)構(gòu)酒色色色网站。

The adsorption behavior of probing molecule of pyridine and bipyridine at Zn electrode has been studied utilizing the SERS technique.

兩種聯(lián)吡啶分子和鋅的作用都比吡啶強(qiáng)，2视频一区无码在线，2'-聯(lián)吡啶在鋅表面存在由電位變化引起的兩種表面吸附物種構(gòu)型的轉(zhuǎn)換日韩人妻中文在线综合。

The electrons on a surface state induced by two-photon absorption (2PA) can be trapped by pyridine or 2, 2'-bipyridine, and have more long lifetime, which is helpful for increasing the third-order nonlinearities.

雙光子吸收誘導(dǎo)產(chǎn)生的表面受陷電子能被Py或2，2'-bPy捕獲精品入口，并且具有較長(zhǎng)的壽命干干操操免费视频，這有利于對(duì)激子吸收的漂白，從而提高了三階非線性黄色网站在线的视频。

In order to solve the backward electron transfer problem, 9 kinds of rhenium bipyridyl photosensitive dyes with different electron donating groups on the p or m-position of the pyridine rings, 2 kinds of rhenium bipyridyl and 2 kinds of ruthenium tris-bipyridyl photosensitive dyes with two tyrosine ethyl ester groups on the bipyridyl rings were designed and synthesized.

本文針對(duì)該類(lèi)太陽(yáng)能電池中存在的電子回傳問(wèn)題国产免费福利网站，設(shè)計(jì)合成了在吡啶配體的間位和對(duì)位帶有不同供電基團(tuán)的9種錸聯(lián)吡啶光敏染料，在聯(lián)吡啶配體上帶有兩個(gè)酪氨酸基團(tuán)的2種錸聯(lián)吡啶和2種釕三聯(lián)吡啶光敏染料18岁以下禁止进的网站。