Claims
- 1. A process for preparing a 2,6-dihaloaniline derivative having the formula (II): ##STR45## wherein R is a hydrogen atom, a linear or branched alkyl group or a substituted or unsubstituted aromatic group and each X is a halogen atom,
- which comprises subjecting a 2,2,6,6-tetrahalocyclohexaneimine derivative having the formula (I): ##STR46## wherein R and X are as defined above to dehydrohalogenation.
- 2. The process of claim 1, wherein the dehydrohalogenation is carried out in the presence of a catalyst.
- 3. The process of claim 1, wherein the dehydrohalogenation is carried out in the presence of a catalyst.
- 4. The process of claim 1, wherein the dehydrohalogenation is carried out by thermal decomposition.
- 5. The process of claim 2, wherein said catalyst is a basic catalyst.
- 6. The process of claim 5, wherein said basic catalyst is at least one member selected from the group consisting of a carbonate of an alkali metal, a carbonate of an alkaline earth metal, a hydrogencarbonate of an alkali metal, an oxide of an alkali metal, an oxide of an alkaline earth metal, a hydroxide of an alkali metal, a hydroxide of an alkaline earth metal and an organic base.
- 7. The process of claim 1, wherein the group X is an atom selected from the group consisting of a fluorine atom, a chlorine atom, a bromine atom and an iodine atom.
- 8. The process of claim 1, wherein the dehydrohalogenation is carried out in a solvent.
- 9. The process of claim 8, wherein said solvent is a member selected from the group consisting of N,N-dimethylformamide, N,N-dimethylacetamide, hexamethylphosphoramide, chlorobenzene, nitrobenzene, cyanobenzene, anisol, acetonitrile, propionitrile and dimethyl sulfoxide.
Priority Claims (3)
Number |
Date |
Country |
Kind |
62-277204 |
Oct 1987 |
JPX |
|
62-277205 |
Oct 1987 |
JPX |
|
62-277206 |
Oct 1987 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 228,134, filed Aug. 3, 1988, and now U.S. Pat. No. 4,508,479.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3558690 |
Sallman et al. |
Jan 1971 |
|
3804877 |
Sallman et al. |
Apr 1974 |
|
3895063 |
Sallman et al. |
Jul 1975 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
228134 |
Aug 1988 |
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