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Inventor: Metz; Hans-Joachim
Address: Bensheim, DE
No. of patents: 1
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 5041571 |
Process of producing anthraquinones in one step |
August 20, 1991 |
| A process for the preparation of anthraquinone compounds comprises reaction of phthalic anhydride with a benzene derivative in a reaction mixture containing HF and BF.sub.3 as catalyst at a first temperature up to about 30.degree. C. and, subsequently, at an elevated temperature. |
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