Process for the preparation of anthraquinone compounds

Details Process for the preparation of anthraquinone compounds Process for the preparation of anthraquinone compounds

1976-03-24

1977-08-09

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

8 3, 8 4, 8 39R, C09B 116

Patent

active

040410536

ABSTRACT:
The invention relates to the preparation of partially known anthraquinone compounds of the formula ##STR1## wherein Z.sub.1 represents an optionally substituted hydrocarbon radical,
Z.sub.2 represents hydrogen or alkyl, one X represents a chlorine atom and the other X denotes a hydrogen atom, by subjecting technical chloroanthraquinone mixtures to a fractional vacuum distillation and reacting the 1,6(1,7)-dichloranthraquinone fraction thereby obtained with amines of the formula HNZ.sub.1 Z.sub.2.
Moreover the invention relates to novel compounds of the above formula wherein Z.sub.2 is H and Z.sub.1 is alkyl, alkenyl, aralkyl or cycloalkyl. They are good dyestuffs for synthetic fibres or dyestuff intermediates.

REFERENCES:
patent: 2348013 (1944-05-01), Lulek et al.
patent: 2487045 (1949-11-01), Dickey et al.
patent: 3462463 (1969-08-01), Schwander et al.
patent: 3499915 (1970-03-01), Schwander et al.

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