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CAS No. : | 15307-93-4 | MDL No. : | MFCD00269648 |
Formula : | C12H9Cl2N | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | HDUUZPLYVVQTKN-UHFFFAOYSA-N |
M.W : | 238.11 | Pubchem ID : | 84867 |
Synonyms : |
2,6-Dichloro-N-phenylaniline
|
Chemical Name : | 2,6-Dichloro-N-phenylaniline |
Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | N/A |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
85% | With sodium hydroxide; In chlorobenzene; | EXAMPLE 22 A 1 l glass reactor was charged with 100 g (0.32 mole) of N-phenyl-2,2,6,6-tetrachlorocyclohexaneimine obtained in Example 1 and 500 g of chlorobenzene, and the mixture was heated in an oil bath with stirring. While keeping the reaction temperature at 100 C., the reaction was continued for 5 hours. After the reaction was completed, the reaction mixture was cooled to 25 C., and washed with 300 g of a 10% aqueous solution of sodium hydroxide. Then, the organic layer was dried with sodium sulfuric anhydride, from which chlorobenzene was distilled away under reduced pressure to give 64.7 g of N-phenyl-2,6-dichloroaniline in the state of a black solid (yield: 85%, mp: 49.5 to 50.7 C.). The obtained N-phenyl-2,6-dichloroaniline had a purity of 92.1% measured by means of gas chromatography. After N-phenyl-2,6-dichloroaniline was purified by recrystallizing from methanol, 1 H-NMR analysis, IR analysis and elementary analysis were conducted. The results are shown below. 1 H-NMR (solvent: CDCl3, internal standard: TMS): delta ppm: 7.53 to 6.55 (8H, m, benzene ring), 5.83 (1H, S, NH). IR (KBr tablet): nu NH: 3380 (cm-1). |
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
87% | EXAMPLE 23 The procedure of Example 22 was repeated except that 40 g (0.38 mole) of sodium carbonate was used and that the reaction temperature was kept at 95° C. to give 66.3 g of N-phenyl-2,6-dichloroaniline (yield: 87percent, purity: 95.1percent). | |
EXAMPLE 2 Preparation of 2,6-dichlorodiphenylamine A mixture of 996 g of 2,6-dichlorophenoxyacetic acid ethyl ester, 500 ml of aniline and 400 ml of n-butanol is preheated to 100° C. in a distillation apparatus. 400 ml of 5.5N sodium methylate are run in over a period of 30 minutes during which a flow of distillate is maintained by the exothermic heat of the reaction. After addition of the sodium methylate, stirring is continued for 15 minutes at 100° C. with continued removal of distillate. 1 l of water is then added and solvent is distilled off down to the sump temperature of 90° C. Phase separation takes place at 60° C. The solvent is drawn off in a vacuum and the product is crystallized from 1l of 90percent i-propanol. The product is separated by suction filtration at 0° C. and washed with dilute i-propanol. Yield: 727 g=76.5percent of the theoretical yield with exploitation of the mother liquor to an extent of 82percent of the theoretical. |
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