With 2-cyano-4-nitro-aniline as raw material, 2-cyano-4-nitro-6-halogen- anilines have been prepared by direct halogenation.

以2-氰基-4-硝基苯胺為原料，用直接鹵化法研制成2-氰基-4-硝基-6-氯苯胺精品国无码一区二区三区不卡、2-氰基-4-硝基-6-溴苯胺91中文视频在线观看、和2-氰基-4-硝基-6-碘苯胺。

After sodium bisulfite reacted with methanal at 60-65℃ for 0.5h, aniline was dripped into the system to synthesize phenylaminomethyl-sodium sulfonate subsequently, the diazol solution of p-nitroaniline was dripped into phenylaminomethyl-sodium sulfonate synthesized to form 4'-nitro-4-aminoazobenzene. The compound was then added into diazol solution of p-chloroaniline to obtain the object product, which was identified by IR spectrum and element analysis.

在60~65℃溫度下456精品视频在线观看，亞硫酸氫鈉與甲醛反應(yīng)半小時之后滴入苯胺生成苯胺基甲基磺酸鈉美日韩在线视频精品观看网站大全，另將硝基苯胺重氮化得到重氮鹽溶液滴入苯胺基甲基磺酸鈉中得到4'-硝基-4-氮基偶氮苯，然后將其滴入氯苯胺重氮化后的重氮鹽溶液中91视频蘑菇，得經(jīng)紅外光譜檢驗和元素分析證實的目標(biāo)產(chǎn)物免费一级欧美性大片口咬。

Based on the mechanism of coupling reaction,the reaction of melt metallocene-based Poly(Ethylene-α-Octene) initiated by dicumyl peroxide was studied at elevated temperature in oscillatory shear flow field.

以苯胺、環(huán)氧丙烷為原料制備了N亚洲另类网，N 二(2 羥丙基)苯胺国产精品无码专区，然后NHPPA與對硝基苯胺通過重氮偶合反應(yīng)制備了一種具有推拉電子結(jié)構(gòu)的偶氮化合物4 硝基 4′ N，N 二(2 羥丙基)氨基偶氮苯可以看理论片的网站。

This study concludes the following four parts:(1) acute toxicity of several chloroanilines to zebra fish;(2) effects of chloroanilines on antioxidant defense of crucian carp;(3) effects of chloroanilines on serum sex steroids in crucian carp;(4) effects of chloroanilines on lymphocyte proliferation in crucian carp, and the detailed results and main conclusions are concluded as follows

本論文以2-氯-4-硝基苯胺日韩免费一区二区三区高清、4-氯-3-硝基苯胺、2-氯-5-硝基苯胺免费观看黄色A片级视频、2毛片免费全部播放无码私人，4-二氯苯胺、3你懂的福利在线，4-二氯苯胺黄色一级大片网站、2，5-二氯苯胺黄美女、2又爽又黄又刺激的网站，3-二氯苯胺為研究對象91国在线精品国内播放，研究分為四部分：(1)氯代苯胺對魚類的急性毒性；(2)氯代苯胺對鯽魚抗氧化系統(tǒng)的影響少妇精品毛片免费看；(3)氯代苯胺對鯽魚血清性類固醇激素水平的影響亚洲无码性爱小视频；(4)氯代苯胺對鯽魚淋巴細(xì)胞增殖的影響。

The acute toxicities of 2-chloro-4-nitroaniline, 4-chloro-3-nitroaniline, 2-chloro-5-nitroaniline, 2, 4-dichloroaniline, 3, 4-dichloroaniline, 2, 5-dichloroaniline, 2, 3-dichloroaniline to zebra fish were conducted in lab. 48h LC〓 values were 11. 18, 4. 62, 9. 23, 9. 55, 7. 07, 6. 68, 0.62mg/L respectively, and 96h LC〓 values were 6. 99, 2. 58, 8. 63, 7. 79, 6. 08, 5. 23, 0.49mg/L respectively.

1研究了2-氯-4-硝基苯胺狼友高清视频在线观看、4-氯-3-硝基苯胺青春草影视在线免费观看视频、2-氯-5-硝基苯胺、2久久三级片视频，4-二氯苯胺免费观看黄网站试看、3，4-二氯苯胺狼友地址、2一级黄色网站一，5-二氯苯胺、2caoprom在线公开视频在线频，3-二氯苯胺對斑馬魚的急性毒性www.99riav3.c鈥唌，經(jīng)計算48h LC〓分別為11.18、4.62就爱操逼网、9.23中文字幕手机在线观看第一页、9.55、7.07A片特级免费欢迎您、6.68淫荡网国产人人、0.62mg/L，96h LC〓分別為6.9997国产公开免费视频、2.58高清免费毛片、8.63、7.79黄色视频免费福利网站、6.08国产区视频综合影院、5.23、0.49mg/L狠狠久久五月，這7種化合物均屬于高毒物質(zhì)狼友免费高清无码视频。

Amino-6-nitrobenzodifuroxan was prepared through a three-step reaction from starting material 3, 5-dinitrobenzoic acid:(1)3, 5-dinitroaniline (1) was synthesized from the reaction of DNBA and hydrazoic acid in inert solvent 1, 2-dichioroethane through Schmidt rearrangement with yield of 89.6%;(2) 1 was subjected to nitration to prepare pentanitroaniline (2) with yield of 51.1%;(3) The title compound was prepared from 2 and sodium azide in acetic acid through denitrogenation and then Schmidt rearrangement with yield of 86.8%, m.p.204℃～206℃.

以3，5-二硝基苯甲酸為原料經(jīng)過3步反應(yīng)合成了7-氨基6-硝基苯并二氧化吠咱：第1步反應(yīng)性爱在线视频无码，在二氯乙烷惰性溶劑中美女AA，DNBA與疊氮酸反應(yīng)并發(fā)生Schmidt重排反應(yīng)生成3，5-二硝基苯胺(1)91精品免费大秀，產(chǎn)率89.6%免费无码在线观看黄色视频；第2步反應(yīng)，1在含100%硫酸的硝硫混酸中硝化生成五硝基苯胺(2)无码高潮喷吹在线播放亚洲，產(chǎn)率51.1%www.免费视频com；第3步反應(yīng)精品69视频一区二区三区，2與疊氮酸反應(yīng)精品久久亚洲网精品九九亚洲网，不經(jīng)分離直接進(jìn)行熱解脫氮91欧美精品激情在线、Schmidt重排反應(yīng)，得到目標(biāo)化合物亚洲a日韩国产， m.p.204℃~ 206℃日韩午夜网页在线观看视频，產(chǎn)率86.8%。

A wavelet packet transform based generalized regression neural networkwas developed to process overlapping ultraviolet absorption spectra of p- nitroaniline ,o- nitroaniline and m- nitroaniline .

開發(fā)了一種小波包變換廣義回歸神經(jīng)網(wǎng)絡(luò)法操的喷水视频，用于處理對硝基苯胺超碰免费在线91、鄰硝基苯胺和間硝基苯胺重疊的紫外吸收光譜，達(dá)到不經(jīng)預(yù)先化學(xué)分離進(jìn)行同時測定的目的久久综合国产72精品。

Methods: 2ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2ethyl5nitro aniline. The product was then synthesized to 3methyl6nitro1Hindazole by using ringclosing reaction in the presence of NaNO2, and then ethylated to obtain 2,3diethyl6 nitro2Hindazole. The latter compound was then reduced by SnCl2/Hcl to get target compound 2,3diethyl6nitro2Hindazole.

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Methods: 2-ethyl aniline was used as starting material of the synthesis and was processed by acetic anhydride acylation, strong nitric acid nitraction at low temperature, and desacyl synthesis to produce 2-ethyl-5-nitro aniline. The product was then synthesized to 3-methyl-6-nitro-lH-indazole by using ring-closing reaction in the presence of NaNO2, and then ethylated to obtain 2, 3-diethyl-6- nitro-2H-indazole. The latter compound was then reduced by SnC12/Hcl to get target compound 2, 3-diethyl-6-nitro-2H-indazole.

以2-乙基苯胺為原料經(jīng)醋酐趵怯焉渖渖洌化、濃硝酸低溫硝化及去趺夥压劭椿仆基保護(hù)合成2-乙基－5-硝基苯胺无码一级毛片一区二区视频黑人，后用亞硝酸鈉關(guān)環(huán)得3-甲基－6-硝基－1H-吲唑，經(jīng)硫酸二甲酯甲基化得2欧美亚洲国产aaaaaaaa，3-二甲基－6-硝基－2H-吲唑欧美片在线免费观看，最后用氯化亞錫將其還原得到目標(biāo)產(chǎn)物，通過1HNMR確定結(jié)構(gòu)與目標(biāo)產(chǎn)物一致狼友日韩三级。

We are a wellknown producing base of dye intermediates. The main products:2,4-Dinitrochlorobenzene, 6-Bromo-2,4-Dinitroaniline,6-chloro-2,4-Dinitroaniline,2-Amino-4-Nitrophenol, 2,4-Dintrophenol, 2,4-Dinitroaniline, and so on.

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