Chromogenic dihydrofuropyridinones

Details Chromogenic dihydrofuropyridinones Chromogenic dihydrofuropyridinones

1982-12-15

1987-05-26

Jiles, Henry R.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

346220, C07D491048

Patent

active

046687904

ABSTRACT:
Chromogenic dihydrofuropyridinones of the general formula ##STR1## wherein R.sub.1 and R.sub.2 independently of each other are hydrogen, C.sub.1 -C.sub.12 alkyl which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or are cycloalkyl, benzyl or phenyl, or benzyl or phenyl which are substituted by halogen, nitro, lower alkyl or lower alkoxy; or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached are pyrrolidinyl;

REFERENCES:
patent: 3775424 (1973-11-01), Farlier
patent: 3916070 (1976-10-01), Ozutsumi et al.
patent: 3936564 (1976-02-01), Miyazawa et al.
patent: 4046776 (1977-09-01), Garner et al.
patent: 4102893 (1978-07-01), Garner et al.
patent: 4334072 (1982-06-01), Becker et al.
patent: 4564679 (1986-01-01), Fujino et al.

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