CAS: 611-06-3; 2,4-Dichloronitrobenzene

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CAS号554-00-7 2,4-二氯苯胺 | CAS号2516-95-2 5-氯-2-硝基苯甲酸 | CAS号342043-37-2 3,5-dichloro-2-... | CAS号541-73-1 间二氯苯 | CAS号142-04-1 苯胺盐酸盐 | CAS号98-95-3 硝基苯 | CAS号5866-97-7 2,6-二氯-3-硝基苯甲醛 | CAS号1635-61-6 5-氯-2-硝基苯胺 | CAS号13785-48-3 2,6-二氯-3-硝基苯胺 | CAS号99-09-2 间硝基苯胺 | CAS号369-34-6 3,4-二氟硝基苯 | CAS号4920-84-7 2,4-二甲氧基硝基苯 | CAS号35966-84-8 5-氯-N-甲基-2-硝基苯胺 | CAS号3698-83-7 1,3-二氯-4,6-二硝基苯 | CAS号53013-43-7 1-(5-氯-2-硝基苯基)哌啶 | CAS号34662-31-2 5-氯-2-硝基苄腈 | CAS号43156-47-4 2-硝基-5-苯巯基苯胺 | CAS号14371-79-0 5-chloro-2-nitr... | CAS号119982-64-8 3-chloro-4-nitr... | CAS号402-67-5 间氟硝基苯

1,3-二氯苯置于五氧化二氮体系中,20.0 °C,600.01 Kpa 条件下,反应 0.5H,以94%的收率获得产物2,4-二氯硝基苯
参考文献:在液化 1,1,1,2-四氟乙烷介质中用五氧化二氮硝化芳烃
标题:在液化 1,1,1,2-四氟乙烷介质中用五氧化二氮硝化芳烃
摘要:不管可持续发展道路如何,今天,仍然存在着高需求的化学生产,它们承受着上个世纪遗留下来的环境和技术风险.硝基化合物,特别是硝基芳烃的制造传统上与利用混合酸的硝化反应中形成的酸性废物有关.然而,硝基芳烃对于工业和军事应用来说是必不可少的.我们面对挑战,开发了一种更绿色,更安全,更有效的硝基芳烃生产方法.所提出的方法包括在液化 1,1,1,2-四氟乙烷 (Tfe) 介质中应用一种生态友好的硝化剂,即五氧化二氮 (Dnp),该介质是最无害的氟利昂之一.重要的,用过的 Tfe 不会排放到大气中,而是会毫不费力地重新冷凝并返回到过程中.获得 Dnp通过臭氧氧化四氧化二氮.该方法具有目标硝基芳烃收率高,反应条件温和,易于利用的废弃物少等特点.
DOI:10.1039/d1Ra04536A

专利信息

专利号:US-5354439-A
优先权日:1990-07-16
标 题 :Process for the synthesis of fluorinated derivatives
发明人：FORAT GERARD; GILBERT LAURENT; LANGLOIS BERNARD
权利人:RHONE POULENC CHIMIE
摘要:A process for the synthesis of fluorinated organic compounds and a reagent suitable for use in the process. The process is carried out by exchange with fluorides, while preferably agitating the reaction medium with ultrasonic sound.

专利号:US-2004024238-A1
优先权日:1999-07-02
标 题:Use of nitriles as polar aprotic solvents
发明人：LAURAIN NATHALIE; ZARD SAMIR
摘要:The invention concerns the use of aliphatic nitriles with relatively high molecular weight, as polar aprotic solvents, in particular in nucleophilic substitution reactions of the aromatic type. Said nitriles have a molecular mass more 79, preferably more than 90. The invention is useful for synthesis of fluorinated aromatic compounds.

专利号:EP-1189855-B1
优先权日:1999-07-02
标 题:Use of nitriles as polar aprotic solvents
发明人：LAURAIN NATHALIE; ZARD SAMIR
权利人:RHODIA CHIMIE SA
摘要:The invention concerns the use of aliphatic nitriles with relatively high molecular weight, as polar aprotic solvents, in particular in nucleophilic substitution reactions of the aromatic type. Said nitriles have a molecular mass more 79, preferably more than 90. The invention is useful for synthesis of fluorinated aromatic compounds.

专利号:US-7217842-B2
优先权日:2001-04-12
标题:Catalysts for nucleophilic substitution, synthesis thereof, composition containing them and use thereof
发明人：SCHANEN VINCENT; CRISTAU HENRI-JEAN; TAILLEFER MARC
权利人:RHONE POULENC CHIMIE
摘要:The invention concerns novel catalysts for aromatic nucleophilic substitution. Said catalysts are compounds of the general formula (I), wherein: R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 , identical or different, are selected among hydrocarbon radicals; the Pn's, advantageously the same, are selected among metalloid elements of column V of a period higher than nitrogen; Z is a metalloid element of column V, advantageously distinct from Pn; preferably a nitrogen (N, P, As, Sb). The invention is applicable to organic synthesis

专利号:US-4124768-A
优先权日:1975-09-24
标题:Process for preparing pure substituted 2,5-diarylamino-terephthalates and the corresponding free acids
发明人：KIRSCH ALOYS; FUCHS OTTO; SPIETSCHKA ERNST
权利人:HOECHST AG
摘要:2,5-Diarylamino terephthalates are obtained in good yields and excellent purity when the aromatic nitro compound used for oxidizing the corresponding dihydro-2,5-diarylamino terephthalate contains the aromatic radical of said diarylamino groups, i.e. when the amine formed during the oxidation is that from which said diarylamino groups device. The products yield very pure quinacridone pigments and allow the synthesis of only one isomer of substituted quinacridones.

专利号:CN-111848695-B
优先权日:2019-04-29
标题:A catalyst and its application in the synthesis of aromatic fluorine compounds