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Nitrochlorobenzene is typically synthesized by nitration of chlorobenzene in the presence of sulfuric acid: . C 6 H 5 Cl + HNO 3 → O 2 NC 6 H 4 Cl + H 2 O. This reaction affords a mixture of isomers.
The chloride substituent in 4-nitrochlorobenzene is more labile than in chlorobenzene. For example, it is readily displaced by sulfide nucleophiles, leading the way to 4-nitrothiophenol . [ 4 ] In another example, 4-nitrochlorobenzene is a favored substrate for cross-coupling reactions .
Purification of 3-nitrochlorobenzene is somewhat difficult since other isomers are formed even via chlorination of nitrobenzene, and all of these isomers have similar physical properties. Hydrolysis at the activated chlorine site of the 2- and 4-isomers (but not at the resistant 3-chlorine center) makes separation by physical means much less ...
Chlorobenzene (abbreviated PhCl) is an aryl chloride and the simplest of the chlorobenzenes, consisting of a benzene ring substituted with one chlorine atom. Its chemical formula is C 6 H 5 Cl. This colorless, flammable liquid is a common solvent and a widely used intermediate in the manufacture of other chemicals.
Other methods afford the compound less efficiently include the chlorination of 1,3-dinitrobenzene, nitration of o-nitrochlorobenzene and the dinitration of chlorobenzene. [3] By virtue of the two nitro substituents, the chloride in DNCB is particularly susceptible to nucleophilic substitution, at least relative to simple chlorobenzene. In this ...
1,4-Dichloro-2-nitrobenzene is an organic compound with the formula C 6 H 3 Cl 2 NO 2. One of several isomers of dichloronitrobenzene, it is a yellow solid that is insoluble in water. One of several isomers of dichloronitrobenzene, it is a yellow solid that is insoluble in water.
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Nitrobenzene is an aromatic nitro compound and the simplest of the nitrobenzenes, with the chemical formula C 6 H 5 NO 2. It is a water-insoluble pale yellow oil with an almond -like odor. It freezes to give greenish-yellow crystals.