| 摘要 |
Triphendioxazine compounds of formula I, <IMAGE> (I) in which R1 and R2 are either both hydrogen or form a single chain linking the 8,9-; 9,10- or 10,11-positions, the single chain having the formula -NR5--(CO)m-NH-, -CR5=CH-CO-NH-, -CO-CH2-CO-NH-, -CO-CH=CR5-NH-, -CO-NH-CO-NH-, -CO-NH-CR6=N-, -CR6=N-CO-NH-, -NR5-(CO)m-O-or -NH-CR5=N-where R5 is hydrogen, C1-4alkyl or phenyl, R6 is hydrogen, C1-4alkyl or phenyl; m is 1 or 2 and R3 and R4 are either both hydrogen or form a single chain linking the 1,2-, 2,3- or 3,4-positions, the single chain having a formula selected from -NR5-(CO)m-NH-, -CR5=CH-CO-NH-, -O-CH2-CO-NH-, -CO-CH=CR5-NH-, -CO-NH-CO-NH-, -CONH-CR6=N-, -CR6=N-CO-NH-, -NR5-(CO)m-O-or -NH-CR5=N-where the symbols R5, R6 and m are defined above and when R3 and R4 are in the 1,2-position and R7 is located in the 3-position or when R3 and R4 are in the 3,4-position and R7 is located in the 2-position or when R1 and R2 are in the 8,9-position and R7 is located in the 10-position or when R1 and R2 are in the 10,11-position and R7 is in the 9-position then R7 is hydrogen or C1-2alkoxy, otherwise R7 is hydrogen, with the proviso that if R1 and R2 are hydrogen then R3 and R4 cannot be hydrogen. These compounds are useful as pigments.
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