Abstract: Chromogenic lactam compounds of the formula ##STR1## in which the ring A is an aromatic or heteroaromatic radical which has 6 ring atoms and may contain a fused aromatic ring, it being possible for both the ring A and the fused ring to be substituted;the ring B is an unsubstituted or substituted benzene ring;Z is ##STR2## O or S; R is hydrogen; unsubstituted or substituted C.sub.1 -C.sub.12 alkyl, cycloalkyl having 5 to 10 carbon atoms; unsubstituted or substituted aryl or aralkyl; C.sub.1 -C.sub.12 acyl; N-(lower alkyl)carbamoyl; or N-arylcarbamoyl which is unsubstituted or substituted on the ring;Q is C.sub.1 -C.sub.12 alkylene, aryl-C.sub.1 -C.sub.4 alkylene, 1,2-cycloalkylene, 1,2- or 1,8-arylene or aralkylene; andX.sub.1 and X.sub.2, independently of one another, are each hydrogen; unsubstituted or substituted alkyl having a maximum of 12 carbon atoms; acyl having 1 to 8 carbon atoms; cycloalkyl having 5 to 10 carbon atoms; or unsubstituted or ring-substituted aralkyl or aryl; or (X.sub.1 and X.sub.

Abstract: Chromogenic lactam compounds of the formula ##STR1## in which the ring A is an aromatic or heteroaromatic radical which has 6 ring atoms and may contain a fused aromatic ring, it being possible for both the ring A and the fused ring to be substituted;the ring B is an unsubstituted or substituted benzene ring;Z is ##STR2## R is hydrogen; unsubstituted or substituted C.sub.1 -C.sub.12 alkyl, cycloalkyl having 5 to 10 carbon atoms; unsubstituted or substituted aryl or aralkyl; C.sub.1 -C.sub.12 acyl; N-(lower alkyl)carbamoyl; or N-arylcarbamoyl which is unsubstituted or substituted on the ring;Q is C.sub.1 -C.sub.12 alkylene, aryl-C.sub.1 -C.sub.4 alkylene, 1,2-cycloalkylene, 1,2- or 1,8-arylene or aralkylene; andX.sub.1 and X.sub.2, independently of one another, are each hydrogen; unsubstituted or substituted alkyl having a maximum of 12 carbon atoms; acyl having 1 to 8 carbon atoms; cycloalkyl having 5 to 10 carbon atoms; or unsubstituted or ring-substituted aralkyl or aryl; or (X.sub.1 and X.sub.

Abstract: Bisphthalide lactones of formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each independently of one another hydrogen, alkyl of at most 12 carbon atoms which is unsubstituted or substituted by halogen, hydroxy, cyano, tetrahydrofuryl or lower alkoxy; or are acyl of 1 to 12 carbon atoms, cycloalkyl of 5 to 10 carbon atoms or unsubstituted aralkyl or aryl, or aralkyl or aryl each substituted by halogen, cyano, nitro, trifluormethyl, lower alkyl, lower alkoxy, lower alkoxycarbonyl, --NX'X"-- or 4--NX'X--"phenylamino, wherein X' and X" are each independently of the other hydrogen, lower alkyl, cyclohexyl, benzyl or phenyl, or the pairs of substituents --NR.sub.1 R.sub.2 and --NR.sub.3 R.sub.4 are each a 5- or 6-membered, preferably saturated, heterocyclic radical, V.sub.1 and V.sub.2 are hydrogen, halogen, lower alkyl, C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.

Abstract: Chromogenic lactone compounds of benzopyrano-2H-pyrazoles of the formula ##STR1## in which Ar is an aryl radical which is unsubstituted or substituted by halogen, nitro, cyano, lower alkyl, lower alkoxy, lower alkylthio, lower alkoxycarbonyl, trifluoromethyl, phenoxy, phenylthio or --NX.sub.3 X.sub.4,R.sub.1 is hydrogen, lower alkyl or lower alkoxy,R.sub.2 is lower alkyl, phenyl, or phenyl which is substituted by halogen, lower alkyl or lower alkoxy, andX.sub.1, X.sub.2, X.sub.3 and X.sub.4, independently of one another, are each hydrogen, alkyl which is unsubstituted or substituted by halogen, hydroxyl, cyano, tetrahydrofuryl or lower alkoxy, or are acyl, cycloalkyl, or aralkyl or aryl, each of which is unsubstituted or substituted by halogen, cyano, nitro, trifluoromethyl, lower alkyl, lower alkoxy or lower alkoxycarbonyl, or the substituent pairs (X.sub.1 and X.sub.2) and (X.sub.3 and X.sub.

Abstract: Chromogenic quinazolines of formula ##STR1## wherein R is an aryl radical or a heterocyclic radical,Z.sub.1 is oxygen or sulfur,Z.sub.2 is oxygen, sulfur or ##STR2## R' is hydrogen, alkyl which is unsubstituted or substituted by halogen, cyano or lower alkoxy, or is cycloalkyl, phenyl, benzyl, phenethyl or acyl, or --NRR' is a 5- or 6-membered heterocyclic radical,Q is an aliphatic radical which may be interrupted by a further member Z.sub.2,Y is the radical of a couplable compound, and the ringA is unsubstituted or substituted by halogen, cyano, nitro, lower alkyl, lower alkoxy or lower alkoxycarbonyl.These quinazolines are exceedingly fast to sublimation and are particularly suitable color formers in pressure-sensitive or heat-sensitive recording materials and give strong and lightfast yellow and orange colorations.

Abstract: The invention relates to chromogenic 3,3-bisindolyl-4-azaphthalides of the general formula ##STR1## wherein Y.sub.1 is hydrogen, C.sub.1 -C.sub.12 alkyl which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or is C.sub.1 -C.sub.12 acyl, benzyl or benzyl substituted halogen, nitro, lower alkyl or lower alkoxy,Y.sub.2 is C.sub.5 -C.sub.12 alkyl, preferably C.sub.6 -C.sub.9 alkyl, which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, andZ.sub.1 and Z.sub.2, each independently of the other, are hydrogen, lower alkyl or phenyl, and the rings A and B, each independently of the other, are unsubstituted or substituted by halogen, nitro, cyano, lower alkyl, lower alkoxy, lower alkoxycarbonyl, amino, mono-lower alkylamino or di-lower alkylamino.These compounds are particularly suitable for use as color formers in pressure-sensitive or heat-sensitive recording materials and produce fast, strong red or violet colorations.

Abstract: Chromogenic bisquinazolines of the formula ##STR1## wherein Q is the direct bond or an aliphatic or cycloaliphatic hydrocarbon radical, or is --CO--, --S-- or --SO.sub.2 --, andY is the radical of a couplable compound, in particular an N-substituted 4-aminophenyl radical or a hydrogenated quinoline radical, and the rings A, B and D are unsubstituted or substituted by cyano, nitro, halogen, lower alkyl, phenyl, benzyl, lower alkoxy or lower alkoxycarbonyl.These compounds are particularly suitable color formers for pressure-sensitive or heat-sensitive recording materials and produce intense yellow or orange colors of excellent fastness to light and, in particular, sublimation.

Abstract: Chromogenic azaphthalides of the 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, cyano, lower alkyl, lower alkoxy or lower alkoxycarbonyl; or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached are a 5-membered or 6-membered heterocyclic radical and in particular pyrrolidinyl;X is hydrogen, halogen, lower alkyl, lower alkoxy, benzyl, phenyl, benzyloxy, phenoxy, or benzyl or benzyloxy which are substituted by halogen, nitro, lower alkyl or lower alkoxy;Y is hydrogen, unsubstituted or substituted alkyl or benzyl or acyl and in particular C.sub.6 -C.sub.

Abstract: The invention relates to ring-substituted 4-azaphthalides of formula ##STR1## wherein Q is a substituted phenyl radical of the formula ##STR2## or a 3-indolyl radical of the formula ##STR3## Y.sub.1 and Y.sub.2 are hydrogen, unsubstituted or substituted alkyl, acyl, or unsubstituted or substituted benzyl,Z.sub.1 and Z.sub.2 are hydrogen, lower alkyl or phenyl,R.sub.1 and R.sub.2, together with the nitrogen atom to which they are attached, are a 5- or 6-membered, preferably saturated, heterocyclic ring,X is hydrogen, halogen, alkyl, alkoxy, acyloxy, benzyl, phenyl, benzyloxy, phenoxy, substituted benzyl or benzyloxy, or is the --NT.sub.1 T.sub.2 group, in which T.sub.1 and T.sub.2 are hydrogen, lower alkyl, cycloalkyl, unsubstituted or substituted benzyl or is acyl, and T.sub.

Abstract: The invention relates to bisquinazolines of the formula ##STR1## wherein the ring A is unsubstituted or substituted by cyano, nitro, halogen, lower alkyl, phenyl, benzyl, lower alkoxy or lower alkoxycarbonyl,Q is an aliphatic radical with a molecular weight of 28 to 450, or is a cycloaliphatic or araliphatic radical,Y is the radical of the formula (2a) ##STR2## or of the formula ##STR3## wherein B, D, X.sub.1, X.sub.2, X.sub.3 and Z are as hereinafter defined. These compounds are particularly suitable as colour formers in pressure-sensitive or heat-sensitive recording materials and give strong yellow or orange colours of excellent fastness to light, especially fastness to sublimation.

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;X is hydrogen, halogen, lower alkyl, lower alkoxy, benzyl, phenyl, benzyloxy, phenoxy, or benzyl or benzyloxy which are substituted by halogen, nitro, lower alkyl or lower alkoxy;Y is C.sub.6 -C.sub.9 alkyl;Z is hydrogen, lower alkyl or phenyl; andthe ring A is a pyridine radical andthe benzene nucleus B is unsubstituted or substituted by halogen, nitro, lower alkyl, lower alkoxy, amino or lower alkylamino.

Abstract: Chromogenic bisquinazolines of the formula ##STR1## wherein Q is the direct bond or an aliphatic or cycloaliphatic hydrocarbon radical, or is --CO--, --S-- or --SO.sub.2 --, andY is the radical of a couplable compound, in particular an N-substituted 4-aminophenyl radical or a hydrogenated quinoline radical, and the rings A, B and D are unsubstituted or substituted by cyano, nitro, halogen, lower alkyl, phenyl, benzyl, lower alkoxy or lower alkoxycarbonyl.These compounds are particularly suitable color formers for pressure-sensitive or heat-sensitive recording materials and produce intense yellow or orange color of excellent fastness to light and, in particular, sublimation.

Abstract: Chromogenic azaphthalides of the 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, cyano, lower alkyl, lower alkoxy or lower alkoxycarbonyl; or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached are a 5-membered or 6-membered heterocyclic radical and in particular pyrrolidinyl;X is hydrogen, halogen, lower alkyl, lower alkoxy, benzyl, phenyl, benzyloxy, phenoxy, or benzyl or benzyloxy which are substituted by halogen, nitro, lower alkyl or lower alkoxy;Y is C.sub.6 -C.sub.

Abstract: The invention relates to chromogenic 3,3-bisindolyl-4-azaphthalides of the general formula ##STR1## wherein Y.sub.1 is hydrogen, C.sub.1 -C.sub.12 alkyl which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or is C.sub.1 -C.sub.12 acyl, benzyl or benzyl substituted halogen, nitro, lower alkyl or lower alkoxy,Y.sub.2 is C.sub.5 -C.sub.12 alkyl, preferably C.sub.6 -C.sub.9 alkyl, which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, andZ.sub.1 and Z.sub.2, each independently of the other, are hydrogen, lower alkyl or phenyl, and the rings A and B, each independently of the other, are unsubstituted or substituted by halogen, nitro, cyano, lower alkyl, lower alkoxy, lower alkoxycarbonyl, amino, mono-lower alkylamino or di-lower alkylamino.These compounds are particularly suitable for use as color formers in pressure-sensitive or heat-sensitive recording materials and produce fast, strong red or violet colorations.

Abstract: The invention relates to chromogenic dihydroquinazolines of the general formula: ##STR1## wherein: the ring A is a monocyclic or polycyclic, unsubstituted or substituted heterocyclic radical which may contain further heteroatoms as ring members,each of X.sub.1, X.sub.2 and Y independently of one another is hydrogen, halogen, lower alkyl, lower alkanoylamino, or a group of the formula ##STR2## X.sub.3 is hydrogen, halogen, lower alkyl or lower alkoxy; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, Z.sub.1 and Z.sub.2 independently of one another is C.sub.1 -C.sub.12 alkyl which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or is cycloalkyl, phenyl, or phenyl or benzyl each substituted by halogen, nitro, lower alkyl or lower alkoxy, and the radicals R may also be hydrogen; oreach pair of substituents (R.sub.1 and R.sub.2), (R.sub.3 and R.sub.4) and (Z.sub.1 and Z.sub.

Abstract: The invention relates to chromogenic quinazolines of the formula ##STR1## wherein Y is a polycyclic non-aromatic heterocyclic radical which is attached to the quinazoline moiety through a fused benzene nucleus and is unsubstituted or substituted, andZ is hydrogen, R, --OR.sub.1, --SR.sub.1 or --NR.sub.2 R.sub.3, whereinR and R.sub.1 are each alkyl which is unsubstituted or substituted by cyano or lower alkoxy, or are cycloalkyl, unsubstituted or substituted aryl or aralkyl or an unsubstituted or substituted heterocyclic radical, and R.sub.1 can also be haloalkyl,R.sub.2 and R.sub.3, each independently of the other, are hydrogen, alkyl which is unsubstituted or substituted by halogen, hydroxy, cyano or lower alkoxy, or are cycloalkyl, phenyl, benzyl, or phenyl or benzyl which are each substituted by halogen, nitro, cyano, lower alkyl, lower alkoxy or lower alkoxycarbonyl, and R.sub.2 can also be acyl; or R.sub.2 and R.sub.

Abstract: Chromogenic azaphthalides of the 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, cyano, lower alkyl, lower alkoxy or lower alkoxycarbonyl; or R.sub.1 and R.sub.2 together with the nitrogen atom to which they are attached are a 5-membered or 6-membered heterocyclic radical and in particular pyrrolidinyl;X is hydrogen, halogen, lower alkyl, lower alkoxy, benzyl, phenyl, benzyloxy, phenoxy, or benzyl or benzyloxy which are substituted by halogen, nitro, lower alkyl or lower alkoxy;Y is hydrogen, unsubstituted or substituted alkyl or benzyl or acyl and in particular C.sub.6 -C.sub.

Abstract: The invention relates to chromenoazaindolizines of the general formula ##STR1## wherein each of Y, X.sub.1 and X.sub.2 independently of the other is hydrogen, halogen, lower alkyl, lower alkanoylamino or a group of the formula ##STR2## each of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of the other is hydrogen, C.sub.1 -C.sub.12 alkyl which is unsubstituted or substituted by halogen, hydroxy, cyano or lower alkoxy, or is cycloalkyl, phenyl, benzyl, or phenyl or benzyl each substituted by halogen, nitro, lower alkyl or lower alkoxy, oreach pair of substituents (R.sub.1 and R.sub.2) and (R.sub.3 and R.sub.

Abstract: The invention relates to chromogenic dihydroquinazolines of the general formula ##STR1## wherein the ring A is a monocyclic or polycyclic, unsubstituted or substituted heterocyclic radical which may contain further heteroatoms as ring members,each of X.sub.1, X.sub.2 and Y independently of one another is hydrogen, halogen, lower alkyl, lower alkanoylamino, or a group of the formula ##STR2## X.sub.3 is hydrogen, halogen, lower alkyl or lower alkoxy; each of R.sub.1, R.sub.2, R.sub.3, R.sub.4, Z.sub.1 and Z.sub.2 independently of one another is C.sub.1 -C.sub.12 alkyl which is unsubstituted or substituted by halogen, hydroxyl, cyano or lower alkoxy, or is cycloalkyl, phenyl, or phenyl or benzyl each substituted by halogen, nitro, lower alkyl or lower alkoxy, and the radicals R may also be hydrogen; oreach pair of substituents (R.sub.1 and R.sub.2), (R.sub.3 and R.sub.4) and (Z.sub.1 and Z.sub.

Abstract: Chromogenic quinazolines of the formula ##STR1## wherein Y is an amino-substituted phenyl radical of the formula ##STR2## or a 3-carbazolyl radical of the formula ##STR3## and Z is hydrogen, R.sub.1, --OR.sub.1 ', --SR.sub.1 ' or --NR.sub.2 R.sub.3,These compounds are particularly suitable for use as color formers in pressure-sensitive or heat-sensitive recording materials and give lightfast yellow, orange and red colorations.