O-(3-hydroxy-1-isoquinolinyl)-benzoic acid

Details O-(3-hydroxy-1-isoquinolinyl)-benzoic acid O-(3-hydroxy-1-isoquinolinyl)-benzoic acid

1976-04-23

1977-03-08

Coughlan, Jr., Paul M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260326A, C07D21724

Patent

active

040112276

ABSTRACT:
7-OXO-7H-dibenzo-[d e,h]-quinolin-2-ol which is useful as an intermediate in the preparation of dyestuffs is prepared by cycloisomerizing the novel compound, N-phenylacetyl phthalimide in an inert solvent and in the presence of a Friedel-Crafts catalyst to form the novel compound O-(3-hydroxy-1-isoquinolinyl)-benzoic acid which is then cyclized by dehydrating condensation to form the 7-oxo-7H-dibenzo-[d e,h]-quinolin-2-ol.

REFERENCES:
hope et al., Chem. Abst. 27 (1933), p. 506.
Diesbach et al., Chem. Abst. 46 (1952), No. 1553 e.

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