4-Hydroxyanthrones and process of preparation

Details 4-Hydroxyanthrones and process of preparation 4-Hydroxyanthrones and process of preparation

1977-12-06

1978-08-15

Curtis, Allen B.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260333, C07C 4982

Patent

active

041071867

ABSTRACT:
4-Novel hydroxyanthrones of the formula ##STR1## wherein R.sup.11 and R.sup.17 are as set forth in the specification. AND A PROCESS FOR THE PREPARATION OF 4-HYDROXYANTHRONES WHEREIN (2-HALOGENO-METHYL)-PHENYL HALOFORMATES OF THE FORMULA ##STR2## wherein R.sup.5 -R.sup.7 are as set forth in the specification are reacted, with an aromatic carbocyclic compound of the formula ##STR3## wherein R.sup.1 to R.sup.4 are as set forth in the specification in the presence of a Friedel-Crafts catalyst, optionally in a solvent, at a temperature in the range of from 0.degree. to 300.degree. C.

REFERENCES:
patent: 3420868 (1969-01-01), Weil
patent: 3835167 (1974-09-01), Pfister

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