Methods Starting from 2-chloro-4-nitrophenol and 2- pyridine hydrochlorid, 3-chloro-4-(pyridin-2-ylmethoxy) aniline was obtained via etherization and reduction. The obtained aniline coupled with N-(4-chloro-3-cyano-7-ethoxyquinolin-6-yl) acetamide to give 4-[3-chloro-4-(2-pyridylmethoxy) phenylamino]-3-cyano-7-ethoxy-6-N-acetylaminoquinoline. And then it was deacetylated, followed by reacting with4- but-2-enoyl chloride to yield the target compound neratinib.

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Diamino-3,5-dinitropyridine and 2,6-diamino-3,5-dinitropyridine-1-oxide was reacted with aqueous ammonia and KMnO4 under different conditions. Substitutions in the 4 position to the nitro group were obtained with high yields: 2,4,6-triamino-3,5-dinitropyridine (81.5%) and 2,4,6-triamino-3,5-dinitropyridine-1-oxide (85.4%).

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Many of the aza quinazolines have showed potent activity, such as pyrido[2,3-d]pyrimidine, pyrido [3,2-d]pyrimidine, pyrido[4,3-d]pyrimidine, pyrido[3,4-d]pyrimidine, and pyrimido [5,4-d]pyrimidine. Moreover, the compounds that the benzene in quinazoline ring was substituted by five-member rings, such as pyrrolo[2,3-d]pyrimidine, pyrazolo[3,4-d]pyrimidine, can also inhibit the EGFR and show bright prospects.

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Starting from pentachloropyridine, intermediate product 2,3,5,6-tetrachloropyridine was prepared by reduction with zinc dust .

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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)題一级黄片视频免费看，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)吡啶光敏染料日韩系列在线精品视频观看网站大全。

In the synthesis of 2,3,5-trichloropyridine, 2-aminopyridine was firstly chloridized to 2-amino-3, 5-dichloropyridine, and then sodium nitrite solution was added with the existence of hydrogen chloride to diazotize the 2-amino-3,5-dichloropyridine.

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Three novel rigid compounds 3, 6-bis[2-(4-pyridylethenyl]-9-ethylcarbazole (L~1), 3,6-bis[2-(2-pyridyl)ethenyl]-9-ethylcarbazole (L~2), 3,6-bis[2-(4-pyridyl)ethenyl]-9 -ethylpyridylcarbazole (L~3) were successfully synthesized by Heck reaction, which were fully characterized by elemental analyses, NMR, MS, IR spectra and single X-ray diffraction analysis.

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The molecular designs and synthesis of triarylamine-based picolinic acid derivatives used as ancillary ligands, and their cyclometalated iridium complexes used as red-and green-emitters, as well as optoelectronics properites of these compounds were investigated in order to solve current problems of organic/polymeric electroluminescent materials and devices.

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Based on the research and development of synthesis of halogenated pyridines the paper chose the electrochemical reduction as a research direction, and to 3,4,5,6–tetrachloropicolinic acid, pentachloropyridine, 3,4,5,6-tetrachloro-2-trichloromethylpyridine for raw materials, the reduction behavior on silver and carbon -containing silver electrode was mainly studied.

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The effects of pyridine substitutive derivations on the metabolic pathway of Blakeslea Trispora, were studied such as 2,6-dimethylpyridine,2,5-dimethylpyridine, 2-amino-6-methylpyridine and tobacco dust which contains mainly 3-pyridine substitutive derivation.

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