Back to results
US 5,859,242 AGranted
Process for producing dioxazine compounds, colored materials therewith and dioxazine compounds having a plate-like crystal form
AssigneeNippon Kayaku Kabushiki Kaisha
InventorsMasaaki Ikeda, Junko Yoshioka, Masao Onishi
Life of this patent
Estimating the term…
Abstract
The present invention relates to a process for producing a dioxazine compound represented by the formula (1) which comprises carrying out a ring closure reaction of a compound represented by the formula (2) in the presence of a dioxazine derivative of the formula (3), colored materials containing this dioxazine compound, and dioxazine compounds having a plate-like crystal form: ##STR1##
Claims2
A dioxazine compound represented by the formula (1):
- ##STR12## wherein R represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms;
- and each of Z.sup.1 and Z.sup.2 independently represents a hydrogen atom or a halogen atom, said compound having a plate-like crystal form having a vertical and horizontal ratio of 1:1 to 1:4 in the mean value of crystal size.
A reaction product obtained by subjecting a compound represented by the formula (2):
- ##STR13## wherein R represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms;
- and each of Z.sup.1 and Z.sup.2 independently represents a hydrogen atom or a halogen atom, to ring closure reaction in the presence of a compound represented by the formula (3):
- ##STR14## wherein R' represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms;
- each of Z.sup.3 and Z.sup.4 independently represents a hydrogen atom or a halogen atom;
- each of X and Y independently represents a substituent;
- i is a number of 1 to 6;
- and j is a number of 0 to 6, but i+j=1 to 6;
- said substituent represented by X is --A--(CH.sub.2).sub.1 --B or a phthalimidoalkyl group and said substituent represented by Y is --A'--(CH.sub.2).sub.n --B' or a phthalimidoalkyl group (wherein A represents a divalent bonding group selected from --SO.sub.2 --, --CO--, --S--, --CH.sub.2 NHCO--, --O--, --CONR.sup.3 --, --SO.sub.2 NR.sub.4 -- and NR.sup.5 (wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represents a hydrogen atom or a saturated or unsaturated aliphatic or aromatic group which may contain a chalcogen atom, a nitrogen atom and/or a halogen atom);
- A' represents a divalent bonding group selected from --SO.sub.2 --, --CO--, --S--, --CH.sub.2 NHCO--, --O--, CR.sup.1 R.sup.2 --, --CONR.sup.3 --, --SO.sub.2 NR.sup.4 -- and NR.sup.5 (wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represents a hydrogen atom or a saturated or unsaturated aliphatic or aromatic group which may contain a chalcogen atom, a nitrogen atom and/or a halogen atom);
- each of B and B' independently represents a bonding group selected from --OR.sup.6 (wherein R.sup.6 represents a hydrogen atom, a metal atom or a saturated or unsaturated aliphatic or aromatic group which may contain a chalcogen atom, a nitrogen atom and/or a halogen atom), --NR.sup.7 R.sup.8 and --R.sup.9 (wherein each of R.sup.7, R.sup.8 and R.sup.9 independently represents a hydrogen atom or a saturated or unsaturated aliphatic or aromatic group which may contain a chalcogen atom, a nitrogen atom and/or a halogen atom);
- and each of n and 1 independently represents a number of 0 to 8)), said reaction product being in plate-like crystal form.
8 more elements
Dependencies are inferred from the claim text.