CAS: 6641-64-1; 4,5-Dichloro-2-Nitroaniline

上下游产品

CAS号99-54-7 1,2-二氯-4-硝基苯 | CAS号89-69-0 2,4,5-三氯硝基苯 | CAS号5462-30-6 N-(4,5-二氯-2-苯胺)乙酰胺 | CAS号95-76-1 3,4-二氯苯胺 | CAS号2150-93-8 N-(3,4-二氯苯基)乙酰胺 | CAS号6306-39-4 1,2-二氯-4,5-二硝基苯 | CAS号95-50-1 邻二氯苯 | CAS号7664-41-7 氨 | CAS号107342-18-7 4,5-dichloro-N-... | CAS号142356-40-9 2-溴-5,6-氯-1H-苯并咪唑 | CAS号2338-25-2 5,6-Dichloro-2-... | CAS号30064-28-9 1,2-Benzenediam... | CAS号18672-03-2 2-氨基-5,6-二氯苯并咪唑 | CAS号99-54-7 1,2-二氯-4-硝基苯 | CAS号95-76-1 3,4-二氯苯胺 | CAS号5348-42-5 4,5-二氯-1,2-苯二胺 | CAS号6478-73-5 5,6-二氯苯并咪唑 | CAS号13041-40-2 Urea,N-(3,4-dic...

N-(4,5-二氯-2-硝基苯基)乙酰胺置于硫酸体系中,化学反应生成 4,5-二氯-2-硝基苯胺
参考文献:Roberts; Turner,Journal Of The Chemical Society,1927,P. 1842
标题:Roberts; Turner,Journal Of The Chemical Society,1927,P. 1842

专利信息

专利号:US-4490463-A
优先权日:1983-03-03
标 题 :Alkanediyl bridged benzimidazolo monomethine cyanine dyes, processes for their preparation, and photographic emulsions and elements containing such dyes
发明人：GILBERT DAVID P
权利人:EASTMAN KODAK CO
摘要:Alkanediyl bridged benzimidazolo monomethine cyanine dyes are disclosed wherein at least one benzimidazolo nucleus is provided with an electron-withdrawing group. A disclosed preparation of the dyes includes producing an electron-withdrawing group substituted bis(2-nitrophenyl)-2-R1-propanediamide, where R1 is hydrogen or alkyl; converting the nitro groups to primary amine substituents; removing the elements of water to effect ring closure; and thereafter providing the -CR1- linked benzimidazole nuclei so formed with an N,N'-alkanediyl bridging group and quaternizing substituents. Dye synthesis is completed by reducing the -CR1- linking group to the corresponding methine. The dyes are useful as sensitizers in silver halide emulsions and photographic elements.

专利号:RU-2124009-C1
优先权日:1992-01-21
标题 :Derivatives of 1,5-benzodiazepine, method of their synthesis, pharmaceutical composition