Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Patent
1992-01-02
1993-05-11
Brust, Joseph Paul
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
549308, C07D40704
Patent
active
052102327
ABSTRACT:
Pyran-containing phthalides of the formula ##STR1## in which R is hydrogen, alkyl which has not more than 12 carbon atoms and is unsubstituted or substituted by halogen, cyano, hydroxyl or lower alkoxy, or is cycloalkyl, phenalkyl or phenyl each of which is unsubstituted or substituted, or an unsubstituted or substituted heterocyclic radical, R' is hydrogen, or R together with R' is C.sub.2 -C.sub.3 alkylene which is unsubstituted or substituted by methyl,
REFERENCES:
patent: 4876357 (1989-10-01), Phaff et al.
Brust Joseph Paul
Ciba-Geigy Corporation
Haley Jacqueline
Mathias Marla J.
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