Method for producing xanthone and thioxanthone compounds useful

Details Method for producing xanthone and thioxanthone compounds useful Method for producing xanthone and thioxanthone compounds useful

1985-07-10

1987-04-28

Kittle, John E.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546 80, 549 27, 549359, 549387, 522 50, 522 53, 522 63, C07D491052, C07D51504, C07D33516, C07D31900

Patent

active

046615954

ABSTRACT:
A method for preparing a compound of formula I ##STR1## in which X is O or S;

REFERENCES:
patent: 4348530 (1982-09-01), Kvita et al.
patent: 4385182 (1983-05-01), Fischer et al.
Organic Chemistry of Sulfur, edited by S. Oae (1977), pp. 231-235.

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