Process for the manufacture of coloured polycyclic metal complexes
United States Patent [191 LEplattenier et al.  
 [45] Apr. 15, 1975 PROCESS FOR THE MANUFACTURE OF COLOURED POLYCYCLIC METAL COMPLEXES [75] Inventors: Francois LEplattenier, Thcrwil;  
 Andre Pugin, Riehen, both of Switzerland [73] Assignee: Ciba-Geigy Corporation, Ardsley,  
 [22] Filed: Dec. 12, 1972 [21] Appl. No.: 314,492  
 [30] Foreign Application Priority Data Dec. I5, I97! Switzerland l8356/7l [52] US. Cl. 260/146 R; 106/208 Q; 260/37 P;  
  260/145 C; 260/239 BC; 260/270 R [51] Int. Cl.. C09b 45/28; C09b 45/30; C09b 45/32 [58] Field of Search 260/145 C, 146 R [56] References Cited FOREIGN PATENTS OR APPLICATIONS 369,837 7/1963 Switzerland 260/146 R OTHER PUBLICATIONS Dimroth et al., 5.l4-Dihydro-Dibenzo[b,l][5.9.l4.- l8 ]tetraaza[ l4]Annulen, Ein Makrocyclischer Chelat- Annalen, 717, 1968.  
 Primary ExaminerFloyd D. I-Iigel Assistant ExaminerC. F. Warren Attorney, Agent, or FirmVincent J. Cavalieri [57] ABSTRACT Process for the manufacture of polycyclic metal complexes of the formulae The products obtained according to this process a valuable pigments for coloring plastics.  
 4 Claims, No Drawings PROCESS FOR THE MANUFACTURE OF phenylenediamine, 4-cyano-l,Z-phenylenediamine, 4- COLOURED POLYCYCLIC METAL COMPLEXES acetylamino-LZ-phenylenediamine, 4-benzoylamino- It has been found that valuable, coloured polycyclic LLphenylenediamine, 3,4-diaminodiphenyl. 1.2- metal Complexes Of the formulae diaminonaphthalene. 2,3-diaminonaphthalene. 1.2-  
  5 1 F II C R c-- R u I g f 3 A A 2 C C l i \N I II R c-- R R l 3 1 C C R wherein A and A denote carbocyclic or heterocyelic diamino-S.6.7 8-tetrahydronaphthalene. 2.3-diaminoaromatic radicals Me denotes a divalent metal atom. 6,7,8-tetmhydronaphthalene. 1.2- n a denote y g n atoms r lkyl r ryl r idiaminoanthraquinone, 2.3-diaminoanthraquinone. cals which are optionally substituted, for example by 9.10-diaminophenanthrene. 5.6- hlllogefi atoms, n tes a hydrogen or halogen atom diaminoacenaphthene. 3,4-diaminopyridine. 2.3- or an alkyl, aryl. nitro. nitrile or arylazo gr up r th diaminodiphenylene oxide. 2.3-diaminoquinoxaline. radicals R and R together form a fused carbocyclic d 2 h 1 5 6 di mino-benzimidazol. ring, are obtained if a carbocyclic or heterocyclic aro- P ibl 1 3 di -b 1 compounds wt i i mime ll&#39;diilmiml is reacted with u y lar. 1,3-dialdehydes or 1,3-diketones of the formula compound in the presence ofa divalent metal ion in an organic solvent.  
  Aromatic 1,2-diamines used are preferably 0- 2 phenylenediamines, especially those of the formula I 0 IMCOCHCOR 2 wherein R and R denote hydrogen atoms or optionally substituted alkyl or aryl groups and R denotes a hydrogen or halogen atom or an alkyl, aryl. nitro, III cyano or arylazo group, especially an optionally substi- Z tuted hen l&#39; fthe formula Y p y azo group 0 wherein X and Y denote hydrogen or halogen atoms or 1 alkyl, alkoxy, phenoxy, phenyl, alkylsulphonyl, carboxy, alkoxycarbonyl, acylamino, aminocarbonyl or N: sulphonic acid groups, or two adjacent radicals X and V Y together form a fused carbocyclic or heterocyclic 5- Y membered or 6-membered ring. As examples there may be mentioned: 12- 1 phenylenediamine, 4-chloro-l ,2-phenylenediamine, 4,5-dichloro-l .Z-phenylenediamine, 4-methyl-l,2- wherein X, and Y denote hydrogen or halogen atoms phenylenediamine, 4,5-dimethyl-l,2- or alkyl, alkoxy, phenoxy, phenylazo, acyl, aminocarphenylenediamine, 3,5-dimethyl-l ,2- bonyl, trifluoromethyl, alkylsulphonyl, alkoxycarbonyl, phenylenediamine, 4-methoxy-l,Z-phenylenediamine, acylamino, for example alkanoylamino or ben- 4-phenoxy-LZ-phenylenediamine. 4-methylsulphonylzoylamino, nitro, cyano, carboxylic acid or sulphonic l.2-phenylenediamine, 4-ethylsulphonyl-l ,2- acid groups and Z, denotes a hydrogen or halogen atom phenylenediamine, 4-carboxy-l,Z-phenylenediamine, or an alkyl group. 4-methoxycarbonyl-l,Z-phenylenediamine, 4- As examples there may be mentioned: malondialdeethoxycarbonyl-l,2-phenylenediamine, hyde, 2-chlor0malondialdehyde, 2- butoxycarbonyl&#39;l l-p y fi methylmalondialdehyde, Z-cyanomalondialdehyde, xyl xy r nyll .2-ph nylen i min phenyl-azo-malondialdehyde, 4&#39;-chloro-phenyloctyloxycarbonyl-l .2-phenylenediamine, 4-nitrol .2- azomalondialdehyde, 2,4&#39;-dichloro-phenyl-azo- 2,5-dichloro-phenyl-azo- 2 &#39;,4 &#39;,5 &#39;-trichlorophenyl-azo- 4-nitro-phenyl-azo- 4-cyano-phenyl-azo- 4-methylsulphonyl-phenyl-azo- 3&#39;-acetylamino-phenyl-azo- 2-sulpho-phenyl-azo- 3&#39;-sulpho-phenyl-azo- 3&#39;-carboxy-phenyl-azoare particularly preferentially used as metal com-&#39; pounds. These metals are appropriately employed in the form of their soluble salts. for example their chlorides or sulphates. or especially in the form of the salts of the lower fatty acids. for example of acetic acid. pro pionic acid or butyric acid.  
  The reaction appropriately takes place in a hydrophilic organic solvent, for example in a lower aliphatic alcohol, such as methanol, ethanol, propanol. isopropanol. butanol or isobutanol. ethylene glycolmonomethyl ether or ethyl ether, or in a lower fatty acid, especially acetic acid, at temperatures between 50 120C, especially 60 90C.  
  Depending on the choice of the solvent or of the dicarbonyl compound, the tricyclic compounds of the Formula 1 or the tetracyclic compounds of the Formula 11 are obtained. The tricyclic compounds are probably intermediate products for the tetracyclic compounds. lf, now, the nature and amount of the solvent are so chosen that the tricyclic compounds are sparingly soluble therein, these precipitate from the reaction mixture before a further reaction to give the tetracyclic compound occurs. Even if all the radicals R R and R of the dioxo compound are different from hydrogen, the reaction stops at the tricyclic compounds, presumably for steric reasons.  
  By virture of their insolubility in the reaction medium. the metal complexes obtained can easily be isolated by filtration. They are valuable dyestuffs which can be used for dyeing the most diverse materials. The compounds which are free of acid groups which confer solubility in water are in particular suitable for pigmenting high molecular organic material, for example cellulose ethers and cellulose esters, such as cthylcellulose. acetylcellulose or nitrocellulose, polyamides, polyurethanes or polyesters, natural resins or synthetic resins. for example aminoplasts, especially ureaformaldehyde and melamine-formaldehyde resins, alkyd resins. phenoplasts, polycarbonates. polyolefines, such as polystyrene, polyvinyl chloride, polyethylene, polypropylene. polyacrylonitrile, polyacrylic acid esters, rubber, casein, silicone and silicone resins, individually or as mixtures. Here it does not matter whether the high molecular compounds mentioned are in the form of 4-sulpho-phenyl-azoplastic masses or melts or in the form of spinning solutions. lacquers. paints or printing inks. Depending on the end use, it proves advantageous to use the new pigments as toners or in the form of preparations. The new pigments are as a rule distinguished by high general fastness properties, colour strength and fastness to migration.  
  Those of the compounds obtained according to the invention which contain sulphonic acid groups can be converted by reaction with water-soluble calcium salts or barium salts into the insoluble calcium lakes or barium lakes, which are also outstandingly suitable for use as pigments.  
  Those metal complexes of the Formulae 1 and 11 wherein R denotes a halogen atom or a nitro, nitrile or arylazo group are new compounds.  
  The success of the process according to the invention is surprising since it is known from the literature that o-diamines react with 1,3-dicarbonyl compounds to give 1,5-diazepines. (See, for example, F.D. Popp and A. Catala Noble: The Chemistry of Diazepines&#34; in Advances on Heterocyclic Chemistry 8 21-82, especially page 67-68, (1967). and Jager. Z. anorg. und allg. Chemie 364 180 (1969)). Admittedly, tricyclic and tetracyclic metal complexes of the Formulae 1 and 11 in which R: is hydrogen are already known. They result. for example. from the reaction of o-diamines with ethinyl compounds. such as propargylaldehyde. in the presence of metal-donating agents (see DOS 1.569.667 which was published on Jan. 14. 1971 and Dimroth. Annalen 717, 137 (1968)). However. it is not possible by means of this process to arrive at compounds of the Formula 1 wherein R is different from hydrogen; furthermore, the ethinyl compounds which serve as the starting substances are more difficult to obtain than the 1,3-dicarbonyl compounds to be used according to the invention. It is furthermore known that compounds of the Formula 1 are obtained if 2 mols of a 2- alkoxymethylene-l,3-dicarbonyl compound are allowed to react with 1 mol of an o-phenylenediamine and the reaction product is subsequently metallised. In a second stage, the metal complexes of the Formula 1 can be cyclised in a melt of o-phenylenediamine to give the tetracyclic compounds of the Formula 11 [see Jager.  
 starting products which are simply accessible and permits greater variation of the substituent R According to Jager, Z. anorg. and allg. Chemie 337 page 84. compounds of the Formula 1 can furthermore be manufactured by reacting 2 mols of the sodium salt of an appropriate hydroxymethyleneketone with 1 mol of a l,2-diamine, for example of o-phenylenediamine, and subsequently metallising the compound formed. In this case, however, in contrast to the use of free 1,3- dicarbonyl compounds, a diazepine formation is not possible as a competing reaction.  
  In the examples which follow the parts, unless other wise stated, denote parts by weight and the percentages denote percentages by weight.  
 EXAMPLE 1 5.28 g (0.030 mol) of phenylazomalondialdehyde are added at 60C to a solution of 3.72 g (0.015 mol) of Ni(CH,,COO) 4 H 0 and 3.24 g (0.030 mol) of o- 3 ,8 78,188 5 6 phenylenediamine in 100 ml of glacial acetic acid. The reaction mixture is stirred for 5 minutes at the reflux temperature. whereupon a brown precipitate forms (Molecular weight 5517) after a few seconds. After cooling to C. the mixture and acetone. 8.80 g (88% of theory) of the analytically pure dyestuff of the formula is filtered and the residue is washed with glacial acetic 5 galculued C H N Ni d acid. water and acetone. 5.8 g of theory) of the mm 6; 1 W m4 brown dyestuff of the formula 1&#39; 1-N m Hi] TH EXAMPLE 2 15 N N 4.90 g (0.020 mol) of 2.5-dichlorophenyl-azomalo-ndialdehyde are added at 60C to a solution of Ni 2.49 g (0.010 mol) of Ni(CH;;COO) .4H O and 5.28 g (0.020 mol) of 3.4-diaminobenzoic acid 2-octy1 ester in N N 20 ml of glacial acetic acid. The reaction mixture is 1 I stirred for 5 minutes at the reflux temperature where- CH VI upon a red-brown precipitate forms after a few seconds. After cooling to 20C the mixture is filtered off 01 uc cu 3 CW 0 11 L i) ((111 and the residue is washed with glacial acetic acid. water 55 which dyes polyvinyl chloride in brown shades, are obwhich dyes polyvinyl chloride is brown shades. are obtained. tained.  
 Analysis: C ,.H CI N NiO (Molecular weight 1002.7)  
 Calculated C 57.4 H 498 C1 14.15 N 11.15 Ni 5.85 Found 573 5.1 14.3 11.3 5.9  
 EXAMPLE 3 c c l l N N VIII which dyes polyvinyl chloride in green shades, are obtained.  
 Analysis:  
 Calcu- C 65.9 H 5.93 N l3.97 Ni 14.64 lated Found 64.5 5.4 13.8 NS  
  The table which follows lists further tetracyclic metal complexes of the initially mentioned Formula I), which were obtained if, following the instructions of the prel5 ceding examples, a dioxo compound of the formula R COCHCOR 5 wherein the substituents R R and R have the meanings indicated in columns 2-4, is reacted with the 1,2- diamine mentioned in column 5 and the acetate of the metal listed in column 1. The dyestuffs obtained dye polyvinyl chloride in brown shades. with the exception 3 CH H 30 of Examples 26 and 27. which dye PVC in green 3 shades.  
 Metal R R R 1,2-Diamine 4 Ni H H H o-Phenylenediamine 5 N1 H CH H o-Phenylenediamine 6 Ni H H CH o-Phenylenediamine 7 Ni H CN H o-Phenylenediamine 8 Ni H CH H 4-Phenoxy-l,Z-phenylenediamine 9 Ni H Phenylazo H o-Phenylenediamine 10 Ni H Phenylazo H 4-Ch1oro-l,Z- henylenedian ine 11 Ni H Phenylazo H 4,5-Dichloro-1,2-phenylenediamine 12 &#39;Ni H Phenylazo H 4-Ethylsu1phonyl-l,2-phenylenediamine 13 Ni H Phenylazo H 2,3-Diamino-quinoxaline Continued 14- Ni H Phenylazo H 2,5-Diaminodiphenylene oxide 15 Ni H P-Chlorophenylazo H o-Phenylenediamine 16 Ni H p-Chlorophenylazo H 4-Carboxy-l ,2-phenylenediamine 17 Ni H p-Nitrophenylazo H o-Phenylenediamine 18 N1 H o-Sulphophnylazo H o-Phenylenediamine 19 Ni H m-Acetylaminophenylazo H o-Phenylenediamine 20 Ni H p-Cyanophenylazo H o-Phenylenediamine 21 Ni H 2&#39; ,5&#39;-Disulphophenylazo H o-Phenylenediamine 22 Ni H 2 ,5&#39;-Dichlorophenylazo H o-Phenylenediamine N1 H 2&#39; ,5&#39;-Dichlorophenylazo H 3,4-Diaminobenzoic acid 2 &#39;-noctyl ester 24- Ni H 2&#39; ,4 ,5&#39;-T r1chlorophenylazo H o-Phenylenediamine 25 N1 H 2&#39; ,3 ,4&#39;-Trich1oropheny1azo H o-Phenylenediamine 26 Ni CH H CH 4,5-Dimethyl-l ,Z-phenylenediamine 27 Ni CH H CH 4-Chloro-l ,2-phenylenedia.mine  
 28 Ni H p-Acetylphenylazo H o-Phenylenediamine 29 Ni H p-Acetylphenylazo H 2,3-Diaminopyridine 30 Ni H p-Cyanophenylazo H 2 ,3-Diaminopyridine 31 Ni H Phenylazo H 2,5-Diamdnopyridine 32 Ni H p-Phenylazo-phenylazo H o-Phenylenediamine 33 N1 H p-Acetylamino-phenylazo H o-Phenylenediamine 34 Ni H Phenylazo H 4-Nitro-l,Z-phepylenediamine I 55 Cu H Phenylazo H O-PHenylenediamine 36 Cu H p-Cyanophenylazo H o-Phenylenediamine 37 Cu H &#39;p-chlorophenylazo H &#39;o-Phenylenediamine 38 Zn H Phenylazo I I H o-Phenylenediamine 59 Ni H Phenylazo H *2 c1 mapwouu- -c1 40 Cu H ditto H ditto 41 Ni H p-Acetylphenylazo H ditto 42 Cu H ditto H ditto 43 Ni H Phenylazo H H N CH O H NnCONH- C1 OCH Continued 44 Cu ditto H ditto 45 Ni p-Acetylphenylazo H ditto 46 Cu H &#39;p-Acetylphenflazo&#34; H l-l N CH H N CONH- OCl-1 47 &#39;Co H Phenylazo&#34; H N C1 48 Co B p-acetylphenylazo H EXAMPLE 49 EXAMPLE 50 A solution of 12.44 g (0.05 mol) ofNi(CH COO) .4- H and of 5.40 g (0.05 mol) of o-phenylenediamine in 400 ml of methylcellosolve in warmed to 80C under nitrogen over the course of 1 hour. 22.0 g (0.10 mol) of p-nitro-phenylazomalondialdehyde dissolved in 400 ml of methylcellosolve are then added dropwise and the reaction mixture is stirred for a further 2 hours at 80C (under nitrogen). After cooling to C, the dyestuff which has precipitated is filtered off and washed with methylcellosolve, water, alcohol and acetone. 15.7 g (55% of theory) of the dark brown nickel complex of the formula are obtained.  
  65 parts of stabilised polyvinyl chloride. 35 parts of dioctyl phthalate and 0.2 part of the dyestuff obtained according to Example 1 are stirred together and then milled on a two-roll calender for 7 minutes at C. A film which is dyed brown, of good fastness to light and migration, is obtained.  
 We claim:  
 1. A polycyclic metal complex of the formula wherein X and Y is hydrogen, chloro, lower alkyl, lower alkoxy. phenoxy. phenyl, carboxy, lower alkoxycarbonyl. lower alkanoyl amino, aminocarbonyl, lower alkylsulphonyl or sulphonic acid group; Me is Cu,Zn,Ni or C0; X and Y, are hydrogen, chloro, lower alkyl, lower alkoxy. phenoxy. phenylazo, loweracyl, trifluoromethyl. lower alkylsulphonyl, nitro, cyano, alkoxycarbonyl. acetylamino. aminocarbonyl, carboxylic acid group or sulphonic acid group; and Z is hydrogen, chloro, or acetyl.  
  4. The polycyclic metal complex of claim 1 of the formula 2. The polycyclic metal complex of claim 1 of the formula 3. The polycyclic metal complex ofcluim l of the formula