Benzanthrone lactones

Details Benzanthrone lactones Benzanthrone lactones

1987-05-15

1988-04-26

Fan, Jane T.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

260376, 260383, 534753, 534765, C07D30777

Patent

active

047406046

ABSTRACT:
There are disclosed benzanthrone lactones of formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined in claim 1. The benzanthrone lactones of formula (1) are important intermediates for the synthesis of novel dyes which are obtained by coupling suitable diazo components to said compounds of formula (1).

REFERENCES:
patent: 1818025 (1927-12-01), Wolfram et al.

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