4-Chloro-1-nitro benzene

LOD and LOQ were measured to assess the sensitivity of the FID, ECD and TSD detectors for GC analysis of various nitroaromatic compounds. A parallel connection of the three detectors at the end of a single narrow-bore capillary column enabled direct comparison of the chromatograms. Structural effects on the response were evaluated and detection mechanisms were discussed. Recommendations were made for identification purposes and for analysis of environmental samples of nitro- and chloro-nitro-benzenes in a wide range of concentrations451. 

Chloro nitro benzene diclofop, ethoxyquin, fluoronitrofen, metobenzuron, nitrofen, tetradifon, tetrasul... 

Figure 12.10 Pyrogram of acrylic emulsion paints containing different organic pigments (a) PR5 (b) PR112 (c) PR4 (d) PY3 (e) PR 251 (f) PY74. Peak assignments 1, EA 2, MMA 3, nBA 4, 4 chloro 2 nitro benzenamine 5, 2 chloro benzenamine 6, 1 chloro 2 isocya nato benzene 7, 2 methoxy 4 nitro benzenamine 8, 2 methoxy benzenamine 9, 1 isocya nato 2 methoxy benzene 10, 1 chloro 4 nitro benzenamine 11,1 chloro 2 nitro benzene 12, 2 naphthalenol 13, 3 amino 4 methoxy N,N diethyl benzenesulfonamide 14, 4 meth oxy N,N diethyl benzenesulfonamide 15, 5 chloro 2,4 demethoxy benzenamine 16, 2,4,5 trichloro benzenamine 17, 1,3,4 trichloro benzene 18, 2 methyl benzenamine 19,...

Dinitrobenzene. e 1 -Chloro-4-nitro-benzene. f l-Chloro-2,4-dinitrobenzene. 

Temper- ature °C Chloro- form Methyl acetate Ethyl acetate Cyclo- hexa- none Nitro- benzene Pyridine Mesityl oxide... 

The preparation of l-chloro-2-(4-methoxyphenyl)methyl-4-nitro-benzene is described by the author in the current invention. 

H0.C6H4.N N.C6H2(N02)2NH.NH2 mw 318.25, N 26.41% red-brown crystals si sol in boiling ale sol in boiling nitro-benzene. Prepd by reacting 5,-chloro-2,4,-dinitro-4-hydroxy-azobenzene hydrazine hydrate in hot alcohol. Decomposes 178—80°... 

What is an immediate precursor of the target Because the final step will involve introduction of one of three groups—chloro, nitro, or propyl—w have to consider three possibilities. Of the three, we know that chlorinatioi. of o-nitropropylbenzene can t be used because the reaction would occur at the wrong position. Similarly, a Friedel-Crafts reaction can t be used as the final step because these reactions don t work on nitro-substituted (deactivated) benzenes. Thus, the immediate precursor of our desired product ij probably ni-chloropropylbenzene, which can be nitrated. This nitration gives a mixture of product isomers, which must then be separated (Figure 16.24). 

Derivation Boiling sodium salt of 4-chloro-3-nitro-benzene sulfonate with sodium sulfite, resulting in formation of sodium-2-nitrobenzene disulfonate, which is reduced with iron and acetic acid to aniline-2,5-disulfonic acid. 

An example of a quantitative SMR study correlating electronic properties and catalytic parameters is provided by the glutathione conjugation of para-substituted l-chloro-2-nitro-benzene derivatives (183). The values of log/j2 (second order rate constant of the nonenzy-matic reaction) and log (enzymatic reaction catalyzed by various glutathione transferase preparations) were correlated with the Hammett resonance cr value of the substrates, a measure of their electrophilicity. Regression equations with positive slopes and values in the range 0.88-0.98 were obtained. These results quantitate the influence of substrate electrophilicity on nucleophilic substitutions mediated by glutathione, be they enzymatic or nonenzymatic. 

Nitro -2 -propoxy acetani lide. JV-(5-Niwith sodium alkoxide, followed by partial reduction and treatment with acetic anhydride Profit, Chem. Tech. (Leipzig) 5, 393 (19S3), C.A. 47, 12757a (1953) by nitration of 1 -propoxy-2-aoetylaminobenzene Verkade et at., Rec. Trav. Chim. 66, 374 (1947) also Brit. pat. 597,-835 (1948 to N. V, polak Schwarz s Essenoefabrieken). 

Beilstein Handbook Reference) Benzene, 1-chloro-2-methyl-5-nitro- Benzene, 2-chloro-1-methyl-4-nitro- BRN 1817924 2-Chloro-1-methyl-4-nitrobenzene 2-Chloro-4-nitrotoluene CNT EINECS 204-501-7 HSDB 5592 NSC 60111 0-Chloro-p-nitrotoluol Toluene, 2-chloro-4-nitro-. Needles mpB66,6° bp = 260 7,m 254, 304 nm (MeOH) slightly soluble in H2O, CHCI3, soluble in EtOH, EI20, AcOH. 

Chloro-2-nitro-benzene 802 202-281-7 Oleic acid diethanolamide 2798... 

Sulfanylbenzothiazole 3 (2-mercaptobenzothiazole) is produced industrially from l-chloro-2-nitro-benzene, sodium sulfide and carbon disulfide. In this synthesis, nucleophilic substitution of the Cl-atom is followed by reduction of the nitro group and finally by cyclocondensation ... 

Chloro-5-methy. 6-nitrO benzene sulfonyl chloride... 

The mono-, chloro-, bromo-, and iodo-benzenes are colourless liquids of peculiar odour. Di-chloro-, di-bromo-benzenes, tri- and hexa-chloro- and bromo-benzenes, are also known and mono-chloro-, C 6 H 4 C1(CH 3 ), and bromo-toluenes, together with di derivatives in the ortho, meta, and para modifications. The nitro-benzenes and toluenes are used as explosives. The following summary is taken from Dr A. Bemthsen s "Organic Chemistry" —... 

Quite lately a patent has been taken out for a mixture of nitro- naphthalene or di-nitro-benzene with ammonium nitrate, and consists in using a solvent for one or other or both of the ingredients, effected in a wet state, and then evaporating off the solvent, care being taken not to melt the hydrocarbon. In this way a more intimate mixture is ensured between the particles of the components, and the explosive thus prepared can be fired by a small detonator, viz, by 0.54 grms. of fulminate. Favier s explosive also contains mono-nitro-naphthalene (8.5 parts), together with 91.5 parts of nitrate of ammonia. This explosive is made in England by the Miners Safety Explosive Co. A variety of roburite contains chloro-nitro-naphthalene. Romit consists of 100 parts ammonium nitrate and 7 parts potassium chlorate mixed with a solution of 1 part nitro-naphthalene and 2 parts rectified paraffin oil. 

Nitrate of Ammonia 90 per cent. Chloro-di-nitro Benzene 5 " Wood Pulp 5 "... 

D-Labelling studies establish that a cyclopropylcarbinyl metal complex is an intermediate in the nickel-promoted rearrangement of penta-1,4-diene to isoprene. Studies of homoconjugation in diary Imethyl systems show that there is an important contribution from (844) in the methanolysis of p-(4-chloro-3-nitrobenzyl)nitro-benzene. ... 

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