1,2-Dichloro-4-nitrobenzene

changed changed 477203433 1,2-Dichlor-4-nitrobenzol.svg 100px 1,2-Dichloro-4-nitrobenzene DCNB, 3,4-dichloronitrobenzene correct chemspider 21106095 1/C6H3Cl2NO2/c7-5-2-1-4(9(10)11)3-6(5)8/h1-3H NTBYINQTYWZXLH-UHFFFAOYAQ correct EBI 167468 correct chemspider 1S/C6H3Cl2NO2/c7-5-2-1-4(9(10)11)3-6(5)8/h1-3H correct chemspider NTBYINQTYWZXLH-UHFFFAOYSA-N correct chemspider 99-54-7 7443 202-764-2 CZ5250000 2811 1578 IJT74JI7FS Clc1ccc(cc1Cl)[N+]([O-])=O C6H3Cl2NO2 192.01 colourless to yellow needles 1.4588 g/cm3 52.8 to 56 263 organic solvents 124 420 1,2-Dichloro-4-nitrobenzene https://pubchem.ncbi.nlm.nih.gov/compound/7443#section=Safety-and-Hazards pubchem.ncbi.nlm.nih.gov 07 09 Warning H302 H317 H319 H411 P261 P264 P264+P265 P270 P272 P273 P280 P301+P317 P302+P352 P305+P351+P338 P321 P330 P333+P317 P337+P317 P362+P364 P391 P501 1,2-Dichloro-4-nitrobenzene is an organic compound with the formula 1,2-Cl2C6H3-4-NO2. This pale yellow solid is related to 1,2-dichlorobenzene by the replacement of one H atom with a nitro functional group. This compound is an intermediate in the synthesis of agrochemicals. Production and uses The nitration of 1,2-dichlorobenzene mainly produces 1,2-dichloro-4-nitrobenzene, together with smaller amounts of the 3-nitro isomer. It can also be prepared by chlorination of 1-chloro-4-nitrobenzene.Gerald Booth (2007). "Nitro Compounds, Aromatic" in Ullmann's Encyclopedia of Industrial Chemistry Wiley-VCH, Weinheim, 2005. One of the chlorides is reactive toward nucleophiles. Potassium fluoride gives 2-chloro-1-fluoro-4-nitrobenzene, an intermediate in the production of herbicides. With ammonia, one obtains 2-chloro-4-nitroaniline, a precursor to diazo dyes. Reduction with iron powder gives 3,4-dichloroaniline (m.p. 72 °C, CAS# 95-76-1). References Category:Nitrobenzene derivatives Category:Dichlorophenyl compounds