Claims
- 1. In the process of reducing halide content in halogenated aromatic hydrocarbons by reduction in the presence of a reagent comprising (i) at least one complex of a transition metal of group 4 or 5 with a multidentate or unidentate organic or inorganic ligand and (ii) a reducing agent, the improvement which comprises conducting the reduction in the presence of an aliphatic or aromatic amine and an inert organic solvent.
- 2. The process according to claim 1 wherein the halogenated aromatic hydrocarbons are polychlorinated aromatic hydrocarbons.
- 3. The process according to claim 2 wherein the polychlorinated aromatic hydrocarbons are polychlorinated biphenyls.
- 4. The process according to claim 1 wherein the amine is trimethylamine, triethylamine, dimethylethylamine, N,N-dimethylaniline, N,N-dimethylnaphthylamine, pyridine, 1-methylimidazole, quinoline, or piperidine.
- 5. The process according to claim 4 wherein the amine is triethylamine, dimethylethylamine, or pyridine.
- 6. The process according to claim 1 wherein the inert organic solvent is diglyme, triglyme, bis-(2-ethoxyethyl) ether, tetrahydrofuran, dimethylsulfoxide, dimethylformamide, or ethylene glycol dimethyl ether.
- 7. The process according to claim 6 wherein the inert organic solvent is diglyme.
- 8. The process according to claim 1 wherein the reduction is conducted at temperatures of from about 50.degree. C. to about 150.degree. C.
- 9. The process according to claim 1 wherein the complex is bis-(.eta..sup.5 -cyclopentadienyl)titanium dichloride.
- 10. The process according to claim 1 wherein the reducing agent is sodium tetrahydridoborate.
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation-in-part of Ser. No. 07/869,743 filed Apr. 16, 1992, now abandoned the disclosure of which is incorporated in its entirety herein by reference.
US Referenced Citations (3)
Non-Patent Literature Citations (2)
Entry |
Dennis, Jr. et al., Bull. Environmental Contam. Toxicology, vol. 22, pp. 750-753 (1979). |
Meunier et al., Journ. of Organometallic Chemistry, vol. 204, pp. 345-346 (1981). |
Continuation in Parts (1)
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Number |
Date |
Country |
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869743 |
Apr 1992 |
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