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7522806 
Journal Article 
SYNTHESES AND THE STRUCTURES OF CARBAZOLE DIOXAZINES HAVING LONG STRAIGHT ALKYL-GROUPS 
Nishi, H; Kitahara, K; Kurosawa, Y; Ikeda, M 
1988 
1 
Nippon Kagaku Kaishi
ISSN: 0369-4577
EISSN: 2185-0925 
1988 
6 
970-974 
English 
WOS:A1988P050500021 
Syntheses and the structures of carbazole dioxazines (diindolo[3, 2-b: 3′, and [2, 3-c: 2′, S′-n]triphenodioxazines) whose two N positions of carbazole rings were covalently substituted by long straight chain alkyl (n-C6-C18) groups were studied. For examining the structure of £X], carbazole dioxazines in which two N positions were covalently substituted by (n-C8-C12) alkyl, groups having linear type-6 c-e and angular type structures £13 c-e] were synthesized from the correspoding 2,5-bis[9-w-alkyl-2-methoxy-3-carbazolyl)amino)-3, 6-dichloro-l, 4-benzoquinones 22 c-d. It was concluded that X does not have the linear type structure by comparing the properties of 6 with those of X. Introduction of long n-alkyl groups on to the carbazole nitrogen of X results in lowering the melting and decomposition points, and a small bathochromic shift was observed in the visible spectra. X showed an improved dispersion property in poly (vinyl chloride). © 1988, The Chemical Society of Japan. All rights reserved.