Di- and triarylurethane dye precursors

Details Di- and triarylurethane dye precursors Di- and triarylurethane dye precursors

C - Chemistry, Metallurgy

07

D

260/306, 260/396

C07D 409/04 (2006.01) B41M 5/136 (2006.01) B41M 5/145 (2006.01) B41M 5/323 (2006.01) B41M 5/327 (2006.01) C07D 311/82 (2006.01) C07D 495/10 (2006.01) C09B 11/26 (2006.01) G03C 1/498 (2006.01) B41M 5/30 (2006.01)

Patent

CA 1296010

Abstract of the Disclosure This invention relates to a compound of the formula Image wherein X is -?-, -?- or -CH2-; ring B represents a carbocyclic aryl ring, substituted or unsubstituted, or a heterocyclic aryl ring; and Z and Z' taken individually represent the moieties to complete the auxochromophoric system of a diarylmethane or a triarylmethane dye when said S-containing ring is open and Z and Z' taken together represent the bridged moieties to complete the auxochromophoric system of a bridged triarylmethane dye when said S-containing ring is open. The compoundsare dye precursor compounds possessing a thiolactone, dithiolactone or thioether ring-closing moiety. The invention further relates to certain metal complexes thereof and to a method of synthesizing the thio- lactone compounds from the corresponding lactones.

525283

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