Pyran-containing phthalides

Details Pyran-containing phthalides Pyran-containing phthalides

1990-09-20

1992-03-17

Hollrah, Glennon H.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549310, 549398, 549226, 549265, 548510, 546 89, 546116, 544345, 544350, 503220, C07D30777, C07D31104

Patent

active

050970445

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.

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