Stilbenes, process for the manufacture thereof and the use there

Details Stilbenes, process for the manufacture thereof and the use there Stilbenes, process for the manufacture thereof and the use there

1978-03-20

1980-04-08

Demers, Arthur P.

Harness for working animal

25230122, 25230124, 542464, C07D47104

Patent

active

041974018

ABSTRACT:
Compounds of the formula I ##STR1## in which X is O or S, R.sub.1 and R.sub.2, being identical or different, are radicals selected from the group of hydrogen, fluorine or chlorine atoms, phenyl, C.sub.1 -C.sub.9 -alkyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -dialkyl-amino, acylamino radicals, or optionally functionally modified carboxy or sulfo groups, two adjacent radicals R.sub.1 and R.sub.2 together optionally representing a benzo ring, a lower alkylene or a 1,3-dioxapropylene group, and A is a group of the formulae ##STR2## in which R.sub.3 and R.sub.4, independently from each other, are hydrogen, fluorine or chlorine atoms or C.sub.1 -C.sub.4 -alkyl groups.

REFERENCES:
patent: 3058989 (1962-10-01), Buell et al.
patent: 3412089 (1968-11-01), Ohkawa
patent: 3712888 (1973-01-01), Kaempfen
patent: 3926969 (1975-12-01), Fleck et al.
patent: 3928228 (1975-12-01), Crounse
patent: 3974172 (1976-08-01), Sahm et al.

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