Aminothiofluoran compounds, process for the production thereof,

Details Aminothiofluoran compounds, process for the production thereof, Aminothiofluoran compounds, process for the production thereof,

1977-02-23

1978-10-24

Randolph, John D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

544145, 26029357, 2603265SA, 260454, 260576, 260578, 428326, 428537, 428913, C07D49710

Patent

active

041220897

ABSTRACT:
A compound capable of forming a color on contact with an electron accepting compound and useful as a chromogenic material for recording members represented by the general formula (I) ##STR1## wherein A represents an oxygen atom or a group capable of forming a lactam ring with benzen ring D; Y represents a hydrogen atom or a functional group (such as a halogen atom or a nitro group); and when A is an oxygen atom, R represents an amino, i.e., unsubstituted, group or a substituted amino group; R.sub.1 and R.sub.3, which may be the same or different, each represents a hydrogen atom, a lower alkyl group, a nitro group, an amino group, or a substituted amino group; and R.sub.2 represents a hydrogen atom or a lower alkyl group; wherein R.sub.1 and R.sub.2 or R.sub.2 and R.sub.3 may combine with benzene ring C to form a nitrogen-containing heterocyclic ring condensed therewith; and when A is a group capable of forming a lactam ring with benzene ring D, R represents ##STR2## R.sub.2 represents ##STR3## R.sub.4 ', R.sub.4, R.sub.5 and R.sub.5 ', which may be the same or different, each represents a hydrogen atom or a lower alkyl group; and R.sub.1 and R.sub.3 each represents a hydrogen atom; processes for the production thereof; and recording members containing the same.

REFERENCES:
patent: 3185696 (1965-05-01), Tien
patent: 3654314 (1972-04-01), Farber et al.
patent: 3837889 (1974-09-01), Hughes et al.
patent: 3864145 (1975-02-01), Seki et al.
patent: 3876659 (1975-04-01), Houlihan et al.
Meyer et al, Ber. Deut. Chem., vol. 33, pp. 2577 to 2584 (1900).
Beilstein's Handbuch der Organischen Chemie, 4th Ed. vol. 19, Main Werke, system No. 2835, pp. 234-235, Verlag Von Julius Springer, Berlin, Germany (1934).

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